4.2.1 Transferring Energy

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion. The faster an object moves, the more kinetic energy it has.

Front

What is potential energy?

Back

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

Front

What is energy?

Back

Energy is the ability to do work or cause change. It is involved whenever something moves or changes.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other. It keeps us on the ground and causes objects to fall.

Front

What is friction?

Back

Friction is a force that opposes motion between two surfaces that are in contact. It can slow down or stop moving objects.

Front

When does a car use the most energy?

Back

A car uses the most energy when it is driving at high speeds, such as 80 miles per hour on the freeway.

Front

What type of energy does an apple have when it is rolling on a table?

Back

The apple has kinetic energy because it is in motion.

Front

What happens to potential energy when an object falls?

Back

When an object falls, its potential energy is converted into kinetic energy as it moves downward.

Front

Can energy be transferred from one object to another?

Back

Yes, energy can be transferred from one object to another, such as when a moving ball hits a stationary ball.

Front

What is an example of potential energy?

Back

An example of potential energy is a stretched rubber band or a book on a shelf.