# Science Chapter 1 Section 4

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• 1.

### Which of the following is the best example of increasing an object's potential energy?

• A.

Rolling a bowling ball

• B.

Turning on a light bulb

• C.

Stretching a rubber band

• D.

Dropping a pencil

C. Stretching a rubber band
Explanation
Stretching a rubber band is the best example of increasing an object's potential energy. When a rubber band is stretched, work is done to overcome the elastic forces within the rubber band, causing it to store potential energy. The potential energy is stored in the stretched rubber band and can be released when the band is let go, causing it to snap back to its original shape. This release of potential energy can be used to do work, such as launching an object or powering a mechanism.

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• 2.

### An object that has kinetic energy must be...

• A.

Lifted above earth's surface.

• B.

In motion.

• C.

At rest.

• D.

None of the above.

B. In motion.
Explanation
An object that has kinetic energy must be in motion because kinetic energy is the energy possessed by an object due to its motion. When an object is in motion, it has the ability to do work and therefore has kinetic energy. If an object is at rest or lifted above the earth's surface, it does not possess kinetic energy.

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• 3.

### As height increases, so does...

• A.

Thermal energy.

• B.

Mechanical energy.

• C.

Kinetic energy.

• D.

Potential energy.

D. Potential energy.
Explanation
As height increases, potential energy also increases. This is because potential energy is the energy possessed by an object due to its position or height above the ground. The higher an object is, the greater its potential energy. Therefore, as height increases, potential energy also increases.

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• 4.

### Energy is...

• A.

When the surfaces of two objects rub against each other.

• B.

The ability to do work.

• C.

The total amount of particles in the area

B. The ability to do work.
Explanation
Energy is the ability to do work. It is a measure of the capacity of a system to perform work or transfer heat. When objects rub against each other, it may result in the conversion of one form of energy into another, but the rubbing itself is not energy. Energy is a fundamental concept in physics and is essential for any type of work to be done.

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• 5.

### If the kinetic energy of the particles in an object are fast moving, what is the temperature?

• A.

A high number

• B.

A low number

• C.

It doesn't change the temperature

• D.

Temperature has nothing to do with kinetic energy

A. A high number
Explanation
The explanation for the given correct answer is that temperature is directly related to the average kinetic energy of the particles in an object. When the kinetic energy of the particles is fast moving, it means that they have a high amount of energy, which corresponds to a high temperature. Therefore, the temperature would be a high number in this case.

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• 6.

### What is energy that is stored in something?

• A.

Electrical energy

• B.

Electromagnetic energy

• C.

Chemical energy

• D.

Thermal energy

C. Chemical energy
Explanation
Chemical energy is the correct answer because it refers to the energy that is stored in the bonds of chemical compounds. When chemical reactions occur, this energy is released or absorbed. It is commonly found in batteries, food, and fuels.

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• 7.

### Chemical energy is what type of energy?

• A.

Potential

• B.

Kinetic

A. Potential
Explanation
Chemical energy is a type of potential energy. Potential energy refers to the energy that an object possesses due to its position or condition. In the case of chemical energy, it is the energy stored in the bonds of chemical compounds. When these bonds are broken, the stored energy is released and can be converted into other forms, such as heat or mechanical energy. Therefore, chemical energy is a form of potential energy that can be transformed into other types of energy.

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• 8.

### What is (a/an) electrode?

• A.

A substance waiting to react

• B.

Travels as a wave

• C.

Energy that is stored

• D.

A metal strip that produces electricity

D. A metal strip that produces electricity
Explanation
An electrode is a metal strip that produces electricity. It is a conductor through which electric current enters or leaves a nonmetallic medium, such as an electrolytic cell or an arc furnace. Electrodes are commonly used in various applications, including batteries, electroplating, and electrical stimulation.

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• 9.

### What is the energy of electrically charged particles?

• A.

Electromagnetic

• B.

Electrical

• C.

Thermal

• D.

Potential

B. Electrical
Explanation
The energy of electrically charged particles is electrical. Electrically charged particles possess electrical energy due to their charge. This energy can be transferred or transformed into other forms, such as electromagnetic energy, thermal energy, or potential energy. However, the initial energy of electrically charged particles is electrical in nature.

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• 10.

### True or False? Particles in matter are constantly moving.

• A.

True

• B.

False

A. True
Explanation
Particles in matter are constantly moving due to their kinetic energy. This movement can be in the form of vibration, rotation, or translation. The motion of particles is responsible for various properties of matter, such as its ability to change shape and volume. Therefore, the statement "Particles in matter are constantly moving" is true.

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