Potential & Kinetic Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or state. For example, a rock held at a height has potential energy because of its position.

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What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. The faster an object moves, the more kinetic energy it has.

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What is electrical energy?

Back

Electrical energy is the energy of moving electrons. It powers our homes and devices.

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What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves. Talking and music are examples of sound energy.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential and kinetic energy in an object. It is the energy associated with the motion and position of an object.

Front

Can energy be created or destroyed?

Back

No, according to the law of conservation of energy, energy cannot be created or destroyed; it can only change forms.

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What is radiant energy?

Back

Radiant energy is the energy of electromagnetic waves, such as light from the sun.

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What is thermal energy?

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Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of particles in an object.

Front

What happens to potential energy when an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases.

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What is an example of energy transformation?

Back

When a battery powers a flashlight, chemical energy in the battery is transformed into electrical energy, which is then converted into light energy.