Assumption College Ep Grade Six Science Final Exam Review
This quiz is to help students to review for the final grade six science exam in EP. The content of this exam is
Questions and Answers
- 1.
The name of the organ in this picture is the ________________.
- A.
Oesophagus
- B.
Stomach
- C.
Rectum
- D.
Lungs
Correct Answer
B. StomachExplanation
The correct answer is stomach. The organ in the picture appears to have a curved shape and is located in the abdominal area, which is consistent with the structure and position of the stomach. The stomach is responsible for storing and breaking down food through the process of digestion.Rate this question:
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- 2.
A neutral solution has a pH value of ________ and with universal indicator added it becomes _________________
- A.
PH 7, red
- B.
PH 15, green
- C.
PH 7, green
- D.
PH 3, purple
Correct Answer
C. pH 7, greenExplanation
A neutral solution has a pH value of 7, which means it is neither acidic nor basic. When universal indicator is added to a neutral solution, it turns green. This is because universal indicator is a mixture of different dyes that change color depending on the pH of the solution. Green is the color associated with a neutral pH of 7.Rate this question:
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- 3.
The main process taking place in this organ is _______________.
- A.
Egestion
- B.
Respiration
- C.
Digestion
- D.
Absorption
Correct Answer
C. DigestionExplanation
The correct answer is digestion because the question is asking about the main process taking place in the given organ. Digestion is the process of breaking down food into smaller molecules that can be absorbed and used by the body. Egestion refers to the elimination of undigested waste, respiration is the process of obtaining oxygen and releasing carbon dioxide, and absorption is the process of taking in nutrients into the bloodstream.Rate this question:
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- 4.
The reaction of an acid and a base is called_______________.
- A.
Dissolving
- B.
Explosion
- C.
Boiling
- D.
Neutralisation
Correct Answer
D. NeutralisationExplanation
Neutralization is the correct answer because it refers to the chemical reaction that occurs when an acid and a base combine to form a salt and water. During neutralization, the acidic and basic properties of the substances are neutralized, resulting in a pH closer to 7, which is considered neutral. This reaction is commonly used in various applications, such as in the production of medicines, cleaning agents, and in the treatment of acidic or alkaline spills.Rate this question:
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- 5.
A turbine in a generator converts mechanical energy into ______________ energy.
- A.
Physical
- B.
Electrical
- C.
Free
- D.
Nuclear
Correct Answer
B. ElectricalExplanation
A turbine in a generator converts mechanical energy into electrical energy. This is because when the turbine spins due to the mechanical energy input, it rotates a magnet inside the generator, which in turn creates a magnetic field. This magnetic field induces a flow of electrons, generating an electrical current. Therefore, the correct answer is electrical.Rate this question:
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- 6.
Circuit breakers are used more often than fuses because they are _______________.
- A.
Recyclable
- B.
Reusable
- C.
Inexpensive
- D.
Smaller
Correct Answer
B. ReusableExplanation
Circuit breakers are used more often than fuses because they are reusable. Unlike fuses, which need to be replaced after they are blown, circuit breakers can be reset and used again. This makes them more convenient and cost-effective in the long run, as there is no need to constantly purchase new fuses. Additionally, the ability to reset circuit breakers allows for quicker restoration of power after an overload or short circuit, making them a preferred choice in electrical systems.Rate this question:
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- 7.
Carbon dioxide turns limewater ______________.
- A.
Clear
- B.
Yellow
- C.
Milky
- D.
Red
Correct Answer
C. MilkyExplanation
Carbon dioxide reacts with limewater thus changing the colour.Rate this question:
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- 8.
Air resistance is the result of what force?
- A.
Gravity
- B.
Friction
- C.
Mechanical
- D.
Kinetic
Correct Answer
B. FrictionExplanation
Air resistance is the result of friction. When an object moves through the air, it experiences resistance due to the friction between the air molecules and the surface of the object. This frictional force opposes the motion of the object, causing it to slow down. Therefore, friction is the force responsible for air resistance.Rate this question:
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- 9.
In this picture what two forces are affecting the skydivers?
- A.
Friction and Gravity
- B.
Friction and Air resistance
- C.
Gravity and water resistance
- D.
Speed and Gravity
Correct Answer
A. Friction and GravityExplanation
The correct answer is Friction and Gravity. When skydiving, the force of gravity pulls the skydiver downwards toward the Earth. Friction, on the other hand, opposes the motion of the skydiver through the air, acting in the opposite direction. These two forces work together to determine the speed and trajectory of the skydiver's descent.Rate this question:
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- 10.
In a fair test how many things can you change?
- A.
One
- B.
Two
- C.
Three
- D.
None
- E.
All
Correct Answer
A. OneExplanation
In a fair test, you can change only one thing. This means that you can only alter or manipulate a single variable or factor in order to observe its effect on the outcome of the test. Changing multiple variables simultaneously may introduce confounding factors and make it difficult to determine the true cause and effect relationship. Therefore, it is important to change only one thing at a time in order to obtain reliable and valid results in a fair test.Rate this question:
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- 11.
What hazard symbol is this?
- A.
Toxic
- B.
Corrosive
- C.
Irritant
- D.
Harmful
Correct Answer
C. IrritantExplanation
The correct answer is "irritant" because this hazard symbol typically represents substances that can cause irritation to the skin, eyes, or respiratory system. These substances may not cause severe harm or toxicity but can still cause discomfort or irritation upon contact. It is important to handle irritants with caution and take necessary precautions to minimize exposure.Rate this question:
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- 12.
When using a chemical with this symbol you should always _____________________.
- A.
Wear a hat
- B.
Sit properly
- C.
Wear safety glasses
- D.
Wear a lab coat
Correct Answer
C. Wear safety glassesExplanation
When using a chemical with this symbol, it is important to wear safety glasses to protect the eyes from any potential hazards or splashes of the chemical. Safety glasses provide a physical barrier and help prevent any direct contact with the eyes, reducing the risk of injury or irritation. Wearing safety glasses is a standard safety precaution in laboratory or industrial settings where chemicals are being used.Rate this question:
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- 13.
A shark has a very low resistance in the water because it is __________________
- A.
Fast
- B.
Hungry
- C.
Skinny
- D.
Streamlined
Correct Answer
D. StreamlinedExplanation
A shark has a very low resistance in the water because it is streamlined. This means that its body shape is designed to reduce drag and allow it to move through the water with minimal resistance. The streamlined shape helps the shark to swim quickly and efficiently, making it an effective predator in the water.Rate this question:
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- 14.
A force is a push or pull that can cause an object to change speed, ____________ and size.
- A.
Colour
- B.
Direction
- C.
Viscosity
- D.
Shape
Correct Answer
B. DirectionExplanation
A force is a push or pull that can cause an object to change speed, direction, and size.Rate this question:
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- 15.
A newton meter is used to measure _______________.
- A.
Speed
- B.
Digestion
- C.
Force
- D.
Air resistance
Correct Answer
C. ForceExplanation
A newton meter is a device used to measure force. It is named after Sir Isaac Newton, who formulated the laws of motion. Force is defined as any interaction that can change the motion of an object. A newton meter measures force in units called newtons, which represent the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared. Therefore, a newton meter is specifically designed to measure force and is not used for measuring speed, digestion, or air resistance.Rate this question:
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- 16.
An example of a liquid with low viscosity is ________________.
- A.
Ketchup
- B.
Water
- C.
Honey
- D.
Treacle
Correct Answer
B. WaterExplanation
Water is an example of a liquid with low viscosity because it flows easily and has a relatively low resistance to deformation. It has a low viscosity due to its molecular structure and weak intermolecular forces. This allows water to flow freely and quickly, making it less thick and sticky compared to substances like ketchup, honey, and treacle, which have higher viscosities.Rate this question:
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- 17.
The liquid with the highest viscosity is ____________.
- A.
Honey
- B.
Ketchup
- C.
Oil
- D.
Water
Correct Answer
B. KetchupExplanation
Ketchup has the highest viscosity among the given options. Viscosity refers to the resistance of a liquid to flow. Honey and ketchup are both thick liquids, but ketchup tends to be thicker and more viscous than honey. Oil has a lower viscosity compared to ketchup and honey, while water has the lowest viscosity among the options. Therefore, ketchup is the liquid with the highest viscosity.Rate this question:
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- 18.
The word used to describe how well a liquid flows is ___________________.
- A.
Ventilation
- B.
Excretion
- C.
Viscosity
- D.
Shear
Correct Answer
C. ViscosityExplanation
Viscosity is the term used to describe how well a liquid flows. It refers to the measure of a fluid's resistance to flow or its "thickness." Liquids with high viscosity flow slowly, while liquids with low viscosity flow quickly. This property is important in various fields such as engineering, medicine, and chemistry, as it affects the behavior and performance of fluids in different applications.Rate this question:
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- 19.
A chemical that reacts with acids and dissolves in water is an alkali. Which of the following is an alkali?
- A.
Water
- B.
Oil
- C.
Dish soap
- D.
Orange juice
Correct Answer
C. Dish soapExplanation
Dish soap is an alkali because it reacts with acids and dissolves in water. It contains a base that can neutralize acids, making it effective for cleaning purposes. Water, oil, and orange juice do not possess alkaline properties and therefore cannot be considered as alkalis.Rate this question:
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- 20.
When you add a 100 ml of a strong base to 5ml of a weak acid the pH value would most like be what pH?
- A.
2pH
- B.
12pH
- C.
4pH
- D.
7pH
Correct Answer
B. 12pHExplanation
When a strong base is added to a weak acid, it results in a reaction that neutralizes the acid. This is because the strong base has a higher concentration of hydroxide ions (OH-) compared to the weak acid's concentration of hydrogen ions (H+). The reaction between the base and acid forms water and a salt. The excess hydroxide ions from the base increase the concentration of hydroxide ions in the solution, leading to a higher pH value. A pH of 12 indicates a highly basic solution, which is consistent with the addition of a strong base to a weak acid.Rate this question:
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- 21.
When two surfaces rub against each other, they slow down as energy is lost as ________.
- A.
Cold
- B.
Heat
- C.
Friction
- D.
Air pressure
Correct Answer
B. HeatExplanation
When two surfaces rub against each other, they slow down as energy is lost as heat. Friction between the surfaces causes the generation of heat, which leads to a decrease in the kinetic energy of the objects in motion. This heat energy is a result of the conversion of mechanical energy into thermal energy due to the resistance encountered during the rubbing process.Rate this question:
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- 22.
When you swim through the water your body is affected by friction with the water. This is called _________________.
- A.
Air resistance
- B.
Water resistance
- C.
Water viscosity
- D.
Drag
Correct Answer
B. Water resistanceExplanation
When you swim through the water, your body experiences a force called water resistance. This force is caused by the friction between your body and the water. As you move through the water, the water molecules push against your body, creating resistance. This resistance makes it harder for you to move through the water and slows you down. Therefore, the correct answer is water resistance.Rate this question:
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- 23.
The main cause of all weather is the_________.
- A.
Sky
- B.
Atmosphere
- C.
Sun
- D.
Moom
Correct Answer
C. SunExplanation
The sun is the main cause of all weather because it provides the energy that drives the Earth's weather systems. The sun's heat warms the Earth's surface, causing air to rise and creating areas of high and low pressure. This pressure difference leads to the movement of air, creating wind patterns. The sun also plays a crucial role in the water cycle, as it evaporates water from oceans, lakes, and rivers, which then condenses to form clouds and eventually falls as precipitation. Therefore, the sun's energy is essential in driving the Earth's weather patterns.Rate this question:
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- 24.
Two ways people can increase friction are _____________ and ________________.
- A.
Increase surface area and roughen the surface
- B.
Decrease surface area and smoothen the surface
- C.
Increase surface area and smoothen the surface
- D.
Make the surface harder and polish it
Correct Answer
A. Increase surface area and roughen the surfaceExplanation
Increasing surface area and roughening the surface are two ways that people can increase friction. When the surface area is increased, there is more contact between the two objects, resulting in a greater frictional force. Roughening the surface creates irregularities and bumps, which also increases the friction between the objects. This can be seen in everyday examples such as using sandpaper to roughen a surface or using a tire with a larger surface area for better traction.Rate this question:
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- 25.
Three ways people can decrease friction are to make the surface smoother, decrease the amount of surface in contact with the object and add ________________.
- A.
Weight
- B.
Sand
- C.
Heat
- D.
Lubrication
Correct Answer
D. LubricationExplanation
One way to decrease friction is by making the surface smoother, which reduces the roughness and irregularities that cause friction. Another way is to decrease the amount of surface in contact with the object, which reduces the frictional force. The third way is to add lubrication, such as oil or grease, which creates a slippery layer between the surfaces and reduces friction. This helps to minimize the resistance and allows objects to move more easily.Rate this question:
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- 26.
A hygrometer is used to measure______________.
- A.
Wind speed
- B.
Atmospheric pressure
- C.
Altitude
- D.
Humidity
Correct Answer
D. HumidityExplanation
A hygrometer is a device used to measure humidity. It is designed to determine the amount of moisture or water vapor present in the air or a specific environment. By measuring the humidity, the hygrometer helps in assessing the comfort level, predicting weather conditions, and monitoring the moisture content in various industries such as agriculture, manufacturing, and storage.Rate this question:
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- 27.
A _______________ is used to measure wind speed.
- A.
Anemometer
- B.
Hygrometer
- C.
Barometer
- D.
Weather balloons
Correct Answer
A. AnemometerExplanation
An anemometer is a device specifically designed and used to measure wind speed. It consists of cups or blades that rotate when exposed to the wind, and the rotation speed is directly proportional to the wind speed. By measuring the rotation speed, an anemometer can accurately determine the velocity of the wind. Therefore, an anemometer is the correct instrument for measuring wind speed.Rate this question:
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- 28.
Battery acid is a strong acid and therefore would have a pH of ____________.
- A.
1ph
- B.
14pH
- C.
5pH
- D.
7pH
Correct Answer
A. 1pHExplanation
Battery acid is a strong acid, which means it completely dissociates in water to release a high concentration of hydrogen ions (H+). The pH scale measures the concentration of H+ ions in a solution. A pH of 1 indicates a very high concentration of H+ ions, making it extremely acidic. Therefore, battery acid would have a pH of 1.Rate this question:
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- 29.
Five different liquids are poured down a board. Liquid A takes 3 seconds to reach the bottom, liquid B takes 70 seconds, liquid C takes 10 seconds while liquid D takes 25 seconds to hit the bottom. Which liquid has the lowest viscosity?
- A.
A
- B.
B
- C.
C
- D.
D
Correct Answer
A. AExplanation
The liquid with the lowest viscosity is liquid A. Viscosity is a measure of a liquid's resistance to flow. The lower the viscosity, the easier it flows. In this case, liquid A takes the shortest time to reach the bottom, indicating that it flows more easily compared to the other liquids. Therefore, liquid A has the lowest viscosity.Rate this question:
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- 30.
Wasp stings are alkaline so if you are stung by a wasp you should apply a _______.
- A.
Strong alkali
- B.
Weak alkali
- C.
Weak acid
- D.
Strong acid
Correct Answer
C. Weak acidExplanation
Wasp stings are alkaline, meaning they have a high pH. Applying a weak acid can help neutralize the alkaline venom, providing relief from the pain and reducing the risk of further irritation or allergic reactions. Strong acids could potentially cause more harm by further damaging the skin, so a weak acid is the appropriate choice.Rate this question:
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Mar 16, 2023Quiz Edited by
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Feb 22, 2010Quiz Created by
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