Midterm Physical Science Study Guide Part 1

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| By Jmanrox43
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Quizzes Created: 1 | Total Attempts: 185
| Attempts: 185
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  • 1/25 Questions

    Physical Science be used in every day life.

    • True
    • False
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About This Quiz

This Midterm Physical Science Study Guide Part 1 explores fundamental concepts such as physics and chemistry, the scientific method, and measurements like volume and density. It's designed to enhance understanding and application of scientific principles in everyday life.

Midterm Physical Science Study Guide Part 1 - Quiz

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  • 2. 

    Average speed=

    • Distance over time

    • Rate over work

    • Joules over seconds

    • Force over area

    Correct Answer
    A. Distance over time
    Explanation
    The correct answer is "Distance over time" because average speed is defined as the total distance traveled divided by the total time taken. It is a measure of how quickly an object is moving over a certain period of time. By dividing the distance by the time, we can determine the average speed of the object.

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  • 3. 

    Density=

    • Watts over mass

    • Joules over seconds

    • Mass over volume

    • Matter over volume

    Correct Answer
    A. Mass over volume
    Explanation
    The correct answer is "Mass over volume" because density is defined as the mass of an object divided by its volume. This means that density is a measure of how much mass is contained within a given volume.

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  • 4. 

    The grass is green is an example of...

    • Hypothesis

    • Law

    • Observation

    • Data

    Correct Answer
    A. Observation
    Explanation
    The statement "The grass is green" is an example of an observation because it is a direct and factual statement about the color of the grass. Observations are made through direct sensory perception and do not involve any interpretation or inference. In this case, the color of the grass can be directly observed and stated without any further analysis or explanation.

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  • 5. 

    A liquid with the least density in a cup with many different liquids will...

    • Float to the top

    • Sink to the bottom

    • Fly like a bird

    • All of the Above

    Correct Answer
    A. Float to the top
    Explanation
    In a cup with many different liquids, the liquid with the least density will float to the top. This is because density is a measure of how much mass is packed into a given volume. A liquid with lower density means that it has less mass packed into the same volume compared to the other liquids. As a result, it will be less dense than the other liquids and will therefore float on top of them.

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  • 6. 

    When liquid turns to gas... 

    • Particles are freed

    • Particles vibrate in place

    • Particles stay the same

    • Particles reproduce

    Correct Answer
    A. Particles are freed
    Explanation
    When a liquid turns into a gas, the particles gain enough energy to break the intermolecular forces holding them together. As a result, they are freed from their fixed positions and move more freely in the gas phase. This process is known as vaporization or evaporation.

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  • 7. 

    The force per area

    • Weight

    • Temperature

    • Pressure

    • Buoyancy

    Correct Answer
    A. Pressure
    Explanation
    Pressure is the force per unit area exerted on a surface. It is the result of the force applied perpendicular to the surface divided by the area over which the force is applied. Pressure can be caused by various factors such as weight, temperature, or buoyancy. Therefore, pressure is the correct answer as it encompasses the concept of force per area.

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  • 8. 

    What is an example of chemical change?

    • Bending a nail

    • Melting butter

    • Freezing ice

    • Rusting metal

    Correct Answer
    A. Rusting metal
    Explanation
    Rusting metal is an example of a chemical change because it involves a chemical reaction between iron and oxygen in the presence of water or moisture. This reaction leads to the formation of iron oxide, which is commonly known as rust. Unlike physical changes such as bending a nail or melting butter, rusting metal involves the transformation of the substance at a molecular level, resulting in a new substance with different properties.

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  • 9. 

    What is the opposite of condensation?

    • Evaporation

    • Precipitation

    • Melting

    • Freezing

    Correct Answer
    A. Evaporation
    Explanation
    Evaporation is the process of a liquid turning into a gas, while condensation is the process of a gas turning into a liquid. Therefore, the opposite of condensation is evaporation.

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  • 10. 

    What is an example of physical change?

    • Soured milk

    • Melted Crayons

    • Production of heat

    • Glow in the dark objects

    Correct Answer
    A. Melted Crayons
    Explanation
    Melted crayons are an example of physical change because they undergo a change in their physical state from solid to liquid when heated. The chemical composition of the crayons remains the same, only their physical appearance and state change. This is different from chemical changes where the substances involved undergo a transformation at the molecular level, resulting in a new substance with different properties.

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  • 11. 

    1 liter =_______ milliliters

    • 1000

    • 100

    • 10

    • 5

    Correct Answer
    A. 1000
    Explanation
    The conversion factor for liters to milliliters is 1000. This means that there are 1000 milliliters in 1 liter. Therefore, the correct answer is 1000.

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  • 12. 

    Can be found by measuring the speed of the molecules.

    • Weight

    • Mass

    • Temperature

    • Volume

    Correct Answer
    A. Temperature
    Explanation
    Temperature can be found by measuring the speed of the molecules. Temperature is a measure of the average kinetic energy of the molecules in a substance. As the temperature increases, the molecules move faster and vice versa. By measuring the speed of the molecules, we can determine the temperature of the substance. Weight, mass, and volume are not related to the speed of molecules and therefore cannot be found by measuring their speed.

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  • 13. 

    The Salt in Salty Water is a..

    • Solute

    • Solvent

    • Colloid

    • Suspension

    Correct Answer
    A. Solute
    Explanation
    The correct answer is solute because in a solution, the solute is the substance that is being dissolved. In this case, the salt is being dissolved in water, making it the solute. The solvent is the substance that does the dissolving, which in this case is the water.

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  • 14. 

    Si units are based on the number...

    • 60

    • 10

    • 5

    • 100

    Correct Answer
    A. 10
  • 15. 

    Measure of gravitational pull.

    • Weight

    • Mass

    • Grams

    • Meters

    Correct Answer
    A. Weight
    Explanation
    Weight is the measure of gravitational pull on an object. It is the force with which the object is pulled towards the center of the Earth or any other celestial body. Weight depends on the mass of the object as well as the strength of the gravitational field. It is measured in units such as pounds or kilograms.

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  • 16. 

    The law that states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant.

    • Charle's Law

    • Boyle's Law

    • Newton's Law

    • Archimede's Principle

    Correct Answer
    A. Boyle's Law
    Explanation
    Boyle's Law states that the volume of a gas is inversely proportional to the pressure of a gas when temperature is constant. This means that as the pressure of a gas increases, the volume decreases, and vice versa. This law was discovered by Robert Boyle in the 17th century and is an important principle in the study of gases. It helps explain the behavior of gases and is used in various applications, such as in the design of compressed gas systems and understanding the behavior of gases in closed containers.

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  • 17. 

    What are the two branches that make up physical science?

    • Matter and energy

    • Physics and motion

    • Momentum and physics

    • Physics and chemistry

    Correct Answer
    A. Physics and chemistry
    Explanation
    Physical science is a branch of science that studies the natural world and the properties of matter and energy. Physics is the branch of physical science that deals with the fundamental principles of matter and energy, including motion, forces, and energy transformations. Chemistry, on the other hand, is the branch of physical science that studies the composition, structure, properties, and reactions of substances. Therefore, the correct answer is physics and chemistry, as these two branches together encompass the study of matter and energy in physical science.

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  • 18. 

    What is the difference between a scientific theory and a scientific law?

    • Laws tell you what happens. Theories tell you why it happens.

    • Laws are always right and theories aren't.

    • They are exactly the same.

    • Laws cannot be proven. Theories can.

    Correct Answer
    A. Laws tell you what happens. Theories tell you why it happens.
    Explanation
    Scientific laws and theories serve different purposes in the field of science. Laws describe and explain observable phenomena or patterns in nature, stating what will consistently happen under certain conditions. On the other hand, theories provide explanations for why these phenomena occur, offering a framework of understanding based on evidence and logical reasoning. While laws are generally accepted as true and reliable, theories are subject to change and refinement as new evidence emerges. Therefore, the correct answer explains that laws tell you what happens, while theories tell you why it happens.

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  • 19. 

    Volume can be measured in..

    • Liters

    • Kilograms

    • Cubic centimeters

    • Both A and C

    Correct Answer
    A. Both A and C
    Explanation
    The correct answer is "Both A and C" because volume can be measured in liters, which is a unit of volume commonly used for measuring liquids, and also in cubic centimeters, which is a unit of volume commonly used for measuring solids. Kilograms, on the other hand, is a unit of weight and not volume.

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  • 20. 

    The first step of the Scientific Method is..

    • Make Observations

    • Form a hypothesis

    • Communicate Results

    • Ask a question

    Correct Answer
    A. Ask a question
    Explanation
    The first step of the Scientific Method is to ask a question. This is because the scientific method is a systematic approach to conducting scientific research, and it starts with identifying a problem or a question that needs to be answered. By asking a question, scientists can define the scope of their research and identify what they want to investigate. Once the question is formulated, they can then proceed to make observations, form a hypothesis, conduct experiments, analyze data, and communicate results.

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  • 21. 

    Dry ice has to __________ energy to turn into air.

    • Gain

    • Lose

    • Both A and B

    Correct Answer
    A. Gain
    Explanation
    Dry ice, which is solid carbon dioxide, undergoes sublimation when it turns into gas. Sublimation is the process in which a solid directly changes into a gas without first becoming a liquid. In order for this phase change to occur, energy needs to be added to the dry ice. Therefore, the correct answer is "Gain" as dry ice needs to gain energy to turn into air.

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  • 22. 

    Physical Science is the study of..

    • Mass and Gravity

    • Matter and Energy

    • Physics and Chemistry

    • Density and weight

    Correct Answer
    A. Matter and Energy
    Explanation
    Physical Science is the study of matter and energy. It involves understanding the properties, behavior, and interactions of both matter and energy in the physical world. This field of science explores various aspects such as forces, motion, electricity, magnetism, and the structure of atoms and molecules. By studying matter and energy, scientists can gain insights into the fundamental principles that govern the universe and develop technologies that benefit society.

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  • 23. 

    The SI Unit for temperature is...

    • Celcius

    • Farenheit

    • Both A and B

    • Kelvin

    Correct Answer
    A. Kelvin
    Explanation
    The Kelvin scale is the SI unit for temperature. It is an absolute temperature scale where zero Kelvin represents absolute zero, the point at which all molecular motion ceases. The Celsius and Fahrenheit scales are not SI units, but rather derived scales based on the freezing and boiling points of water. Therefore, the correct answer is Kelvin.

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  • 24. 

    An alloy is...

    • A metal and a non-metal combined

    • 2 metals combined

    • A liquid metal

    • Both B and C

    Correct Answer
    A. 2 metals combined
    Explanation
    The correct answer is "2 metals combined." An alloy is a mixture of two or more metals, typically created to enhance the properties of the individual metals involved. This combination results in a material with improved strength, durability, or other desirable characteristics. Alloys are commonly used in various industries, including manufacturing, construction, and aerospace, due to their unique properties and versatility.

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  • 25. 

    At what point does salt melt?

    • It's freezing point

    • It's condensing point

    • It's evaporating point

    • It doesn't melt

    Correct Answer
    A. It's freezing point
    Explanation
    Salt, like most substances, has a freezing point. This is the temperature at which it transitions from a solid to a liquid state. When salt reaches its freezing point, the intermolecular forces holding its particles together weaken, allowing them to move more freely and form a liquid. Therefore, the correct answer is "It's freezing point."

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 15, 2010
    Quiz Created by
    Jmanrox43
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