24-25 Energy Study Guide

Front

What is chemical energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like atoms and molecules. It is released or absorbed during a chemical reaction.

Front

How is energy transformed when you warm your hands by a fire?

Back

Chemical energy is converted into heat energy.

Front

What are the energy transformations in an alarm clock when it goes off?

Back

Electrical energy is transformed into mechanical energy and then into sound energy.

Front

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.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state. For example, a skateboarder at the top of a ramp has potential energy.

Front

At which point does a skateboarder have the most kinetic energy?

Back

The skateboarder has the most kinetic energy at point 2, where they are moving the fastest.

Front

Why is surface ocean water warmer than bottom ocean water?

Back

Surface ocean water absorbs more energy from the sun, making it warmer than the water at the bottom.

Front

What is the transformation of energy when a bicycle rider pedals after eating breakfast?

Back

Chemical energy from food is transformed into kinetic energy as the rider moves.

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons, such as the energy used to power a light bulb.