RRHS Material Science: Trivia Quiz!

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| By Carl Schlegel
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Carl Schlegel
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Quizzes Created: 3 | Total Attempts: 1,268
Questions: 50 | Attempts: 216

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Science Quizzes & Trivia

Questions and Answers
  • 1. 

    Think back to "The Secrets of the Samurai Sword". What was alloyed with the iron to create steel?

    • A.

      Ferrous Oxide

    • B.

      Carbon

    • C.

      Bauxite

    • D.

      Tin

    Correct Answer
    B. Carbon
    Explanation
    Carbon is alloyed with iron to create steel. Carbon is added to the iron during the steel-making process to increase its hardness and strength. The carbon atoms form a solid solution with the iron atoms, creating a stronger and more durable material. This process is known as carbonization and is essential in the production of steel, which is widely used in various industries due to its high tensile strength and versatility.

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  • 2. 

    What allowed the Samurai sword to maintain it's a tough sharp edge, and yet not break from striking it's intended target?

    • A.

      Low carbon steel exterior surface wrapped around a high carbon steel interior.

    • B.

      High carbon steel exterior surface wrapped around a low carbon steel interior.

    • C.

      Mild carbon steel exterior surface wrapped around a high carbon steel interior.

    • D.

      Stainless steel exterior surface wrapped around a high carbon steel interior.

    Correct Answer
    B. High carbon steel exterior surface wrapped around a low carbon steel interior.
    Explanation
    The high carbon steel exterior surface of the Samurai sword provides the toughness and sharpness needed for striking the intended target, while the low carbon steel interior prevents the sword from breaking. This combination of materials allows the sword to maintain its edge and durability during use.

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  • 3. 

    If a material is described as being "Non-Newtonian", overall, what does that mean?

    • A.

      That if you add energy (shear force) it will make a liquid thicker or more rigid or more viscous. Examples: oobleck (cornstarch-water mixture), liquid body armor

    • B.

      The material or substance does not follow the laws of physics as described by Newton.

    • C.

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous. Examples: catsup, concrete, some paint, printer's ink

    • D.

      It has a resistance or opposition to flowing as a liquid.

    Correct Answer
    B. The material or substance does not follow the laws of physics as described by Newton.
    Explanation
    If a material is described as being "Non-Newtonian", it means that the material or substance does not follow the laws of physics as described by Newton. This means that the material's behavior and properties cannot be explained or predicted using Newtonian physics principles. The material may exhibit unusual or unexpected behavior when subjected to shear forces or energy, and its viscosity or flow characteristics may not adhere to the typical patterns observed in Newtonian fluids.

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  • 4. 

    If a material is said to be "Dilatant", what does that tell us about the material?

    • A.

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous Examples: catsup, concrete, some paint, printer's ink

    • B.

      Does not follow the laws of physics as described by Newton

    • C.

      Adding energy (Shear force) makes a liquid thicker or more rigid -more viscous Examples: oobleck (cornstarch - water mixture), liquid body armor

    • D.

      It has a resistance or opposition to the flowing as a liquid.

    Correct Answer
    C. Adding energy (Shear force) makes a liquid thicker or more rigid -more viscous Examples: oobleck (cornstarch - water mixture), liquid body armor
    Explanation
    A material that is "Dilatant" becomes thicker or more rigid when energy (shear force) is added to it. This means that it becomes more viscous and does not flow easily. Examples of dilatant materials include oobleck (cornstarch-water mixture) and liquid body armor.

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  • 5. 

    If a liquid material is said to be "Thixotropic", what does that tell us?

    • A.

      It has a resistance or opposition to flowing as a liquid.

    • B.

      Adding energy (shear force) makes a liquid thicker or more rigid - more viscous Examples: oobleck (cornstarch - water mixture), liquid body armor

    • C.

      Does not follow the laws of physics as described by Newton

    • D.

      Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous Examples: catsup, concrete, some paint, printer's ink

    Correct Answer
    D. Adding energy (shear force) makes a solid thinner or causes it to liquefy - less viscous Examples: catsup, concrete, some paint, printer's ink
    Explanation
    The term "Thixotropic" refers to a liquid material that becomes thinner or liquefies when energy or shear force is applied to it. This means that the material has a resistance or opposition to flowing as a liquid and becomes less viscous when subjected to agitation or movement. Examples of thixotropic materials include catsup, concrete, some paint, and printer's ink.

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  • 6. 

    The definition of Viscosity is:

    • A.

      The hotter it gets the thinner it gets

    • B.

      The rate of resistance or opposition to the flow of a liquid.

    • C.

      The cooler it gets the thinner it gets

    • D.

      The cooler it gets the thicker it gets.

    Correct Answer
    B. The rate of resistance or opposition to the flow of a liquid.
    Explanation
    Viscosity is a property of liquids that refers to the resistance or opposition to flow. It is not dependent on temperature, as stated in the incorrect options. The correct answer accurately defines viscosity as the rate of resistance or opposition to the flow of a liquid, regardless of temperature.

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  • 7. 

    When working around chemicals, the preferred Personal Protective Equipment (PPE) to protect your eyes would be:

    • A.

      Your sunglasses at night.

    • B.

      Safety glasses

    • C.

      Clear safety goggles

    • D.

      Welding helmet

    Correct Answer
    C. Clear safety goggles
    Explanation
    When working around chemicals, clear safety goggles are the preferred Personal Protective Equipment (PPE) to protect your eyes. This is because clear safety goggles provide a barrier between the eyes and any potential chemical splashes or airborne particles, ensuring that the eyes are protected from harm. Sunglasses at night would not provide sufficient protection, safety glasses may not provide a complete seal around the eyes, and a welding helmet is specifically designed for protecting against the intense light and heat produced during welding, not chemical exposure.

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  • 8. 

    This type of glove is normally the appropriate PPE when doing experiments with chemicals in the class room.

    • A.

      Nitrile disposable gloves

    • B.

      Cotton gloves

    • C.

      Leather gloves

    • D.

      Mittens

    Correct Answer
    A. Nitrile disposable gloves
    Explanation
    Nitrile disposable gloves are the appropriate PPE when conducting experiments with chemicals in the classroom. Nitrile gloves are resistant to many chemicals and provide a barrier between the hands and the chemicals, reducing the risk of exposure. They are also disposable, which means they can be easily discarded after use to prevent cross-contamination. Compared to cotton gloves, leather gloves, and mittens, nitrile gloves offer better protection and are more suitable for handling chemicals in a laboratory setting.

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  • 9. 

    If you are working with clear liquids in a test tube or other container, lose track, and are trying to distinguish which is which, the appropriate procedure would be to:

    • A.

      Pour small amounts onto a cookie sheet, light the fluid and observe the color and intensity of the flame.

    • B.

      Do a spark test with a flint rock.

    • C.

      Hold the container down and pointed away from your nose and lightly "waft" or fan your hand to quickly smell any fumes gassing off, without inhaling. Alcohol, laquer thinner, acetone, all smell different.

    • D.

      Dump them all down the drain and walk away.

    Correct Answer
    C. Hold the container down and pointed away from your nose and lightly "waft" or fan your hand to quickly smell any fumes gassing off, without inhaling. Alcohol, laquer thinner, acetone, all smell different.
    Explanation
    The appropriate procedure for distinguishing between clear liquids in a test tube is to hold the container down and pointed away from your nose, and lightly "waft" or fan your hand to quickly smell any fumes gassing off, without inhaling. This is because different liquids such as alcohol, laquer thinner, and acetone have distinct smells, allowing you to identify them based on their odor.

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  • 10. 

    Someone has left an extension cord across the walkway between the tables, and you see a student heading in that direction. You should:

    • A.

      You should wait for them to get closer, and jerk the end of the cord tripping them. That will teach them to watch where they are going!

    • B.

      You should warn them so they don't trip, and then reposition or put the cord away so it is no longer in the walk way.

    • C.

      You should get up, go ask your teacher to find and tell whoever used it last and left it, to come back and put it away.

    • D.

      Do nothing. It's not your problem, and you have no responsibilty to make sure that yourself and others are always safe.

    Correct Answer
    B. You should warn them so they don't trip, and then reposition or put the cord away so it is no longer in the walk way.
    Explanation
    The correct answer is to warn the student and then reposition or put away the cord so it is no longer in the walkway. This is the responsible and considerate action to take in order to prevent accidents or injuries. It is important to prioritize the safety of oneself and others, and taking proactive measures to remove potential hazards is the right thing to do.

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  • 11. 

    In our classroom and shop, we have 3 fire extinguishers. They are classified as this type of fire extinguisher.

    • A.

      ABCD

    • B.

      OMG

    • C.

      MSG

    • D.

      ABC

    Correct Answer
    D. ABC
    Explanation
    The correct answer is ABC because the statement mentions that there are 3 fire extinguishers in the classroom and shop. The options given are "ABCD," "OMG," "MSG," and "ABC." Among these options, only "ABC" matches the number of fire extinguishers mentioned in the statement. Therefore, "ABC" is the correct answer.

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  • 12. 

    This type of fire is the combustion of Wood/Paper/Trash.

    • A.

      D

    • B.

      A

    • C.

      B

    • D.

      C

    Correct Answer
    B. A
    Explanation
    The correct answer is A because wood, paper, and trash are all examples of combustible materials that can undergo combustion and produce fire.

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  • 13. 

    This type of fire extinguisher, which we do not have in our class or shop, is for combustible metals fires.

    • A.

      A

    • B.

      C

    • C.

      D

    • D.

      B

    Correct Answer
    C. D
    Explanation
    The given correct answer is D. The explanation for this is that the fire extinguisher mentioned in the statement is specifically designed for combating fires caused by combustible metals. Since the extinguisher is not available in the class or shop, it implies that it is not suitable for dealing with other types of fires such as those caused by flammable liquids or electrical equipment. Therefore, option D is the correct answer.

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  • 14. 

    A fire that has flammable liquids, grease, or oil as it's combustion source would be this type of fire:

    • A.

      B

    • B.

      D

    • C.

      C

    • D.

      F

    Correct Answer
    A. B
    Explanation
    A fire that has flammable liquids, grease, or oil as its combustion source would be classified as a Class B fire. This is because Class B fires involve flammable liquids and gases, such as gasoline, oil, and grease. These fires can spread rapidly and are best extinguished using foam or dry chemical fire extinguishers specifically designed for Class B fires.

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  • 15. 

    An electrical fire is classified as a Type _______ fire.

    • A.

      A

    • B.

      E

    • C.

      B

    • D.

      C

    Correct Answer
    D. C
    Explanation
    An electrical fire is classified as a Type C fire because this type of fire involves energized electrical equipment or wiring. Type C fires are typically caused by short circuits, overloaded circuits, or faulty electrical appliances. They require specialized extinguishing agents that are non-conductive and specifically designed to suppress electrical fires.

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  • 16. 

    One should never put water on these types of fires:

    • A.

      Grease fire on your stove

    • B.

      gas fire on engine

    • C.

      A fire in your toaster

    • D.

      A fire in your microwave

    • E.

      All of the above

    Correct Answer
    E. All of the above
    Explanation
    Water should not be used to extinguish grease fires, gas fires, fires in toasters, or fires in microwaves because water can cause these types of fires to spread or intensify. Grease fires are fueled by oil or fat, and water can cause the oil to splatter and spread the fire. Gas fires on engines can be fueled by flammable liquids, and water can spread the fire or cause an explosion. Fires in toasters and microwaves involve electrical components, and water can conduct electricity and pose a risk of electrocution. Therefore, using water on any of these types of fires is not recommended.

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  • 17. 

    It is important to use the fume hood if doing experiments that may create:

    • A.

      Fumes

    • B.

      Small amounts of smoke

    • C.

      Smells

    • D.

      All of the above

    Correct Answer
    D. All of the above
    Explanation
    The fume hood should be used when conducting experiments that may produce fumes, small amounts of smoke, or smells. This is because the fume hood is designed to safely contain and remove these hazardous substances from the laboratory environment. By using the fume hood, researchers can protect themselves and others from potential health risks associated with these substances.

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  • 18. 

    When we worked with a thick piece of copper wire and pulled it through a die to make it thinner and longer, the property of the copper we were exploring was:

    • A.

      Petina

    • B.

      Ductility

    • C.

      Oxidation

    • D.

      Malleability

    Correct Answer
    B. Ductility
    Explanation
    Ductility is the property of a material that allows it to be stretched into a wire without breaking. In this scenario, when we pulled the thick copper wire through a die to make it thinner and longer, we were testing its ability to be stretched and elongated without fracturing. Therefore, the property of copper being explored in this situation is ductility.

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  • 19. 

    When we worked with copper wire and attempted to bend it and straighten it and bend it and straighten it, the property being explored was:

    • A.

      Malleability

    • B.

      Annealing

    • C.

      Ductility

    • D.

      Work hardening

    Correct Answer
    D. Work hardening
    Explanation
    Work hardening is the correct answer because when copper wire is repeatedly bent and straightened, it becomes harder and stronger. This is due to the dislocations in the crystal structure of the metal increasing, which makes it more resistant to further deformation. This process is known as work hardening and it is a characteristic property of certain metals, including copper. Malleability refers to the ability of a material to be hammered or pressed into different shapes without breaking, while annealing is a heat treatment process to soften and relieve internal stresses in a material. Ductility refers to the ability of a material to be stretched into a wire or thread.

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  • 20. 

    When we were working with the copper wire, we also placed it on an anvil (the back of a shop vise) and hammered on it with a Ball Peen Hammer. What metal properties were we exploring while doing this lab?

    • A.

      Stength and durability

    • B.

      Malleability and work hardening

    • C.

      Ductility and tempering

    • D.

      Sintering and bonding

    Correct Answer
    B. Malleability and work hardening
    Explanation
    When we hammered the copper wire on an anvil, we were exploring its malleability and work hardening properties. Malleability refers to the ability of a metal to be hammered or rolled into thin sheets without breaking. By hammering the copper wire, we were testing its malleability. Work hardening, on the other hand, is the process in which a metal becomes stronger and harder when it is deformed through mechanical work, such as hammering. So, by hammering the copper wire, we were also examining its work hardening properties.

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  • 21. 

    In the material world, when we are examing the crystal structures and the differences between the same metal that has had different processes applied to it to obtain different desired properties, we learned that High carbon steel, for example, has a durable very hard surface. This is because of where the carbon ended up in the molecular structure of the alloy of Iron and Carbon that makes the steel. This crystal structure is called:

    • A.

      BCC (Body Centered Carbon)

    • B.

      FCC (Face Carbon Cover)

    • C.

      BCC (Body Centered Cubic)

    • D.

      FCC (Face Centered Cubic)

    Correct Answer
    D. FCC (Face Centered Cubic)
    Explanation
    The correct crystal structure for high carbon steel is FCC (Face Centered Cubic). This means that the carbon atoms are located at the center of each face of the unit cell in the crystal structure. This arrangement results in a durable and very hard surface for the steel.

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  • 22. 

    Low carbon steel allows for more flexibility in the material before it will stress to a breaking point. Low carbon steel acted as the "shock absorber" in the Samurai Sword, which kept the impact from the high carbon exterior of the sword, from transmitting shock waves throughout the sword and possibly causing it to break or shatter. It is the molecular structure of the crystals that enables the sword to have the tough hard outer shell that maintains the sharp edge, while at the same time being durable. This atomic/molecular structure is referred to as:

    • A.

      FCC (Fast Cutting Carbon)

    • B.

      FCC (Face Centered Cubic)

    • C.

      BCC (Body Centered Cubic)

    • D.

      BCC (Back Centered Cubic)

    Correct Answer
    C. BCC (Body Centered Cubic)
    Explanation
    The atomic/molecular structure referred to in the explanation is the Body Centered Cubic (BCC) structure. This structure allows the sword to have a tough hard outer shell while maintaining a sharp edge and durability. The BCC structure is characterized by a lattice with atoms at the corners and one atom in the center of the cube. This arrangement provides strength and stability to the material, making it suitable for withstanding shocks and impacts without breaking or shattering.

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  • 23. 

    Back when they used to build ships out of wood and sail the seven seas, they covered the bottom of the hulls with a material that killed organisms that tried to grow their causing damage and rot. This material was:

    • A.

      Zinc

    • B.

      Ferrous Oxide

    • C.

      Silver Nitrate

    • D.

      Copper

    Correct Answer
    D. Copper
    Explanation
    Copper was used as a material to cover the bottom of the ship hulls because it has antimicrobial properties. It effectively killed organisms that tried to grow on the hull, preventing damage and rot. This practice was common during the era when ships were made of wood and sailed the seas. Zinc, Ferrous Oxide, and Silver Nitrate are not commonly used for this purpose and do not possess the same antimicrobial properties as copper.

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  • 24. 

    Some metals are considered antimicrobial because they inhibit the growth of living organisms, such as barnacles, moss, fungus, or bacteria.

    • A.

      Silver

    • B.

      Copper

    • C.

      Zinc

    • D.

      All of the above

    • E.

      None of the above

    • F.

      Copper Only

    Correct Answer
    D. All of the above
    Explanation
    All of the mentioned metals - silver, copper, and zinc - are considered antimicrobial because they have properties that inhibit the growth of various living organisms such as barnacles, moss, fungus, and bacteria. These metals have been widely used in various applications, including medical devices, water purification systems, and surface coatings, due to their ability to prevent the growth and spread of harmful organisms. Therefore, all of the mentioned metals possess antimicrobial properties.

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  • 25. 

    "Fe" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Flourine

    • B.

      Iron

    • C.

      Francium

    • D.

      Fermium

    Correct Answer
    B. Iron
    Explanation
    The correct answer is Iron because "Fe" is the chemical symbol for iron on the periodic table.

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  • 26. 

    "Cu" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Carbonium

    • B.

      Carbon

    • C.

      Copper

    • D.

      Calcium

    Correct Answer
    C. Copper
    Explanation
    The correct answer is Copper. "Cu" is the chemical symbol for copper according to the periodic table.

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  • 27. 

    "C" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Carbon

    • B.

      Calcium

    • C.

      Cesium

    • D.

      Cadmium

    Correct Answer
    A. Carbon
    Explanation
    The chemical symbol "C" on the periodic table represents the element carbon. Carbon is a nonmetallic element that is essential for life and is found in all living organisms. It is known for its ability to form a wide variety of compounds due to its unique bonding properties. Carbon is also a key component of many important substances such as diamonds, graphite, and coal.

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  • 28. 

    "Pb" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Peanut Butter

    • B.

      Palladium

    • C.

      Pottasium

    • D.

      Lead

    Correct Answer
    D. Lead
    Explanation
    The chemical symbol "Pb" on the periodic table represents the element lead.

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  • 29. 

    "Si" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Sodium

    • B.

      Silver

    • C.

      Silicon

    • D.

      Tin

    Correct Answer
    C. Silicon
    Explanation
    The chemical symbol "Si" on the periodic table represents the element silicon.

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  • 30. 

    "Sn" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Tin

    • B.

      Sulfur

    • C.

      Salt

    • D.

      Samarium

    Correct Answer
    A. Tin
    Explanation
    The chemical symbol "Sn" on the periodic table represents the element tin. Tin is a metallic element with the atomic number 50 and is commonly used in various industries, including electronics and coatings. It is a silvery-white metal known for its low toxicity and resistance to corrosion, making it a valuable material in many applications.

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  • 31. 

    "Na" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Nitrogen

    • B.

      Salt

    • C.

      Nickle

    • D.

      Sodium

    Correct Answer
    D. Sodium
    Explanation
    The chemical symbol "Na" on the periodic table represents the element sodium. Sodium is a highly reactive metal that is commonly found in salt and various other compounds. It is an essential element for many biological processes and is also used in various industrial applications. Sodium is known for its characteristic yellow color when burned and its ability to react explosively with water.

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  • 32. 

    "Cl" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Cobalt

    • B.

      Chlorine

    • C.

      Calcium

    • D.

      Californium

    Correct Answer
    B. Chlorine
    Explanation
    The chemical symbol "Cl" on the periodic table represents the element chlorine. Chlorine is a halogen with atomic number 17 and is commonly used as a disinfectant and in the production of various chemicals. It is a highly reactive element and exists as a diatomic molecule, Cl2, in its natural state. Chlorine is a greenish-yellow gas with a strong odor and is essential for various biological processes.

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  • 33. 

    "Al" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Alibaster

    • B.

      Argon

    • C.

      Alumina

    • D.

      Aluminum

    Correct Answer
    D. Aluminum
    Explanation
    The correct answer is Aluminum because "Al" is the chemical symbol for aluminum on the periodic table. Alumina is a compound of aluminum, but it is not the chemical symbol. Alibaster is a type of mineral, and argon is a different element on the periodic table.

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  • 34. 

    "Hg" on the periodic table is the Chemical Symbol for _____________.

    • A.

      Hydrogen

    • B.

      Silver

    • C.

      Terbium

    • D.

      Mercury

    Correct Answer
    D. Mercury
    Explanation
    The chemical symbol "Hg" on the periodic table represents the element Mercury. Mercury is a heavy, silver-colored metal that is liquid at room temperature. It is commonly used in thermometers and barometers due to its high density and low freezing point. Mercury is also toxic and can be harmful to human health and the environment if not handled properly.

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  • 35. 

    Of the following, which of these materials can be engineered to be a conductor in some circumstances and an insulator in other applications?

    • A.

      Titanium

    • B.

      Silicon

    • C.

      Iridium

    • D.

      Paladium

    Correct Answer
    B. Silicon
    Explanation
    Silicon can be engineered to be a conductor in some circumstances and an insulator in other applications. This is because silicon is a semiconductor, which means its electrical conductivity can be controlled by adding impurities or applying external electric fields. By doping silicon with specific elements, it can be made to conduct electricity, while in its pure form, it acts as an insulator. This property makes silicon a vital material in the field of electronics and allows for the creation of devices like transistors and diodes.

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  • 36. 

    It is important to do this process as you cool the glass in the kiln down from the 1490 degrees F we had to heat it to, to fuse the glass together. Failure to do so will result in glass that will crack or break very easily. This gradual cool down to room temperature is called:

    • A.

      Sintering

    • B.

      Tempering

    • C.

      Quenching

    • D.

      Annealing

    Correct Answer
    D. Annealing
    Explanation
    Annealing is the correct answer because it refers to the gradual cooling process of glass in a kiln from a high temperature to room temperature. This process is necessary to relieve internal stresses in the glass and prevent it from cracking or breaking easily. Sintering, tempering, and quenching are not appropriate terms for this specific cooling process.

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  • 37. 

    This tool is called a _________________.

    • A.

      Etching tool

    • B.

      Glass cutter

    • C.

      Glass marker

    Correct Answer
    B. Glass cutter
    Explanation
    A glass cutter is a tool specifically designed for cutting glass. It typically consists of a small metal wheel or blade that is used to score the surface of the glass, creating a line along which the glass can be easily broken. This tool is commonly used in various applications such as glass art, stained glass work, and glass installation.

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  • 38. 

    Of the tools pictured in this set, which tool is the "Grozer Pliers", used for breaking glass at a at a right angle to a scored line?

    • A.

      Far left

    • B.

      Middle Left

    • C.

      Middle right

    • D.

      Far right

    Correct Answer
    D. Far right
    Explanation
    The "Grozer Pliers" are used for breaking glass at a right angle to a scored line. Among the tools pictured in the set, the tool located on the far right is the correct answer.

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  • 39. 

    Of the tools pictured in this set, which tool is the "Nipping Pliers", used for breaking glass into smaller pieces, such as triangles, or too trim up around an edge?

    • A.

      Far left

    • B.

      Middle left

    • C.

      Middle right

    • D.

      Far right

    Correct Answer
    C. Middle right
    Explanation
    The "Nipping Pliers" tool is used for breaking glass into smaller pieces and trimming up around an edge. Among the tools pictured in the set, the tool located in the middle right position is the correct answer.

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  • 40. 

    It is important that you make sure this matches with the glass you are getting ready to fuse in the kiln. Mismatching this may cause the glass to break as it is cooling down and annealing, after melting together during the fuse.

    • A.

      Opaqueness and glass thickness

    • B.

      The color of your eyes

    • C.

      Polar covalent bonds

    • D.

      Coefficient of Thermal Expansion

    Correct Answer
    D. Coefficient of Thermal Expansion
    Explanation
    The coefficient of thermal expansion refers to the rate at which a material expands or contracts with changes in temperature. In the context of fusing glass in a kiln, it is crucial to ensure that the coefficient of thermal expansion of the glass matches with the kiln's temperature changes. If there is a mismatch, the glass may break as it cools down and anneals after the fusing process. Therefore, understanding and considering the coefficient of thermal expansion is important for successful glass fusing.

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  • 41. 

    The process being done with this Raku clay is called ____________________. The purpose of this is to work the air out and make the clay a uniform consistency for creating a project.

    • A.

      Kneading

    • B.

      Wedging

    • C.

      Molding

    • D.

      Mixing

    Correct Answer
    B. Wedging
    Explanation
    Wedging is the correct answer because it is the process of kneading and working the clay to remove air bubbles and create a uniform consistency. This is important for creating a project as it ensures that the clay is free from air pockets which can cause the project to crack or explode during firing. Mixing refers to combining different materials, molding is shaping the clay into a desired form, and kneading is a part of the wedging process.

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  • 42. 

    The shaping process used to make the upper portion of this piece of pottery is called__________________.

    • A.

      Slabbing

    • B.

      Coiling

    • C.

      Throwing

    Correct Answer
    B. Coiling
    Explanation
    Coiling is the correct answer because it refers to the shaping process used to make the upper portion of the pottery. Coiling involves creating long, snake-like coils of clay and then stacking and joining them together to build the desired shape. This technique allows for more control over the form and thickness of the pottery, as well as the ability to create intricate designs and patterns. Slabbing and throwing are other pottery techniques, but they are not specifically related to the shaping of the upper portion of the pottery.

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  • 43. 

    The glaze(s) used to put this kind of a finish on the outside of this Raku Pinch Pot were likely made from a _______________ Oxide.

    • A.

      Nitrous

    • B.

      Zinc

    • C.

      Copper

    Correct Answer
    C. Copper
    Explanation
    The glaze used to put this kind of finish on the Raku Pinch Pot is likely made from Copper Oxide. Copper oxide is commonly used in pottery to create a variety of colors and effects on the surface of the clay. It can produce vibrant blues, greens, and reds when fired at the appropriate temperature. Therefore, it is the most suitable option for creating the desired finish on the outside of the Raku Pinch Pot.

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  • 44. 

    We encountered a problem and lost some of our pottery when we were preparing it for glazing prior to the final firing. The first step after allowing our pottery to "air dry" for a day or two, was to do a process we call candling. To "candle" our pottery, which evaporates all the water moisture through out the pieces without boiling the water, we set the oven to:_______

    • A.

      250 F degrees for 3 hours

    • B.

      100 C for 8 -10 hours

    • C.

      200 F for 8-10 hours

    • D.

      350 F for 6-8 hours

    Correct Answer
    C. 200 F for 8-10 hours
    Explanation
    The correct answer is 200 F for 8-10 hours. Candling is a process used to evaporate the water moisture from pottery without boiling the water. Setting the oven to 200 F for 8-10 hours allows for a slow and gradual evaporation of the water, preventing any damage to the pottery. This temperature and duration are ideal for achieving the desired outcome of candling the pottery effectively.

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  • 45. 

    The purpose of this higher temperature firing of the pottery, which is a lower temperature than the final glaze firing is to remove any remaining moisture trapped in the clay that comes from the chemical other than water moisture removed during the "candling" firing. This firing is called the _____________ fire.

    • A.

      Ceramic

    • B.

      Mojolica

    • C.

      Bisque

    • D.

      Katana

    Correct Answer
    C. Bisque
    Explanation
    The purpose of the higher temperature firing of the pottery, which is lower than the final glaze firing, is to remove any remaining moisture trapped in the clay. This firing is called the bisque fire.

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  • 46. 

    The final step in our Raku process, after we have heated the pottery up to the point where they are glowing red hot is to:

    • A.

      Open the kiln and allow the pottery to slowly cool down to anneal it.

    • B.

      Open the kiln quickly, take out the pottery and put it into a can filled with sawdust or some other organic material, catching it on fire.

    • C.

      Open the kiln quickly, take out the pottery and quickly quench it in cold water to temper it.

    Correct Answer
    B. Open the kiln quickly, take out the pottery and put it into a can filled with sawdust or some other organic material, catching it on fire.
  • 47. 

    Smothering the can of sawdust that is burning because of the hot pottery placed in it, causes the carbon to be drawn into the glazes resulting in beautiful, smoky colors. This step in the Raku process is called: ________________________

    • A.

      Carbonization

    • B.

      Oxidation

    • C.

      Reduction

    Correct Answer
    C. Reduction
    Explanation
    Smothering the burning sawdust with the can causes a reduction atmosphere inside the can. In a reduction atmosphere, there is a limited supply of oxygen, which causes the carbon in the sawdust to react with the glazes on the pottery. This reaction results in the formation of beautiful, smoky colors on the pottery's surface. Therefore, this step in the Raku process is called reduction.

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  • 48. 

    The best of the best ancient Samurai Swords carried a rating attesting to its excellence. They were rated as 5 ___________ swords.

    • A.

      Star

    • B.

      Hammer

    • C.

      Body

    Correct Answer
    C. Body
    Explanation
    The best ancient Samurai Swords were rated as 5 Body swords. This suggests that the rating system used for these swords was based on their overall quality, craftsmanship, and performance. The term "Body" may imply that these swords were considered to be the embodiment of perfection and excellence in terms of their physical attributes and functionality.

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  • 49. 

    When you did the "heat treating metal" lab with Mr. Lathrop, heating up the spring steel bristles from the street sweeper brush, one of the first things you did was to heat up the bristle red hot and then just let it cool. At that point, you could easily bend and twist the end of the steel bristle. This process of heat treating is called: __________________

    • A.

      Sintering

    • B.

      Tempering

    • C.

      Quenching

    • D.

      Annealing

    Correct Answer
    D. Annealing
  • 50. 

    When you did the "heat treating metal" lab with Mr. Lathrop, heating up the spring steel bristles from the street sweeper brush, one of the things you did was to heat up the bristle red hot and then plunge it into cold water. At that point, you could easily break the end of the steel bristle off into small pieces with your fingers. This process of heat treating is called: __________________

    • A.

      Tempering

    • B.

      Annealing

    • C.

      Work hardening

    • D.

      Quenching

    Correct Answer
    D. Quenching
    Explanation
    During the "heat treating metal" lab, when the red hot spring steel bristle was plunged into cold water, it caused rapid cooling of the metal. This process is known as quenching. Quenching involves rapidly cooling heated metal to increase its hardness and strength. This sudden cooling causes the formation of a martensitic structure, which makes the metal brittle. Therefore, when the end of the steel bristle was broken off easily with fingers, it demonstrated the effects of quenching on the metal.

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