Harnessing Human Energy Review

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 at the edge of a cliff has potential energy because of its height.

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 happens to potential energy when an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, converting energy from one form to another.

Front

What is an example of potential energy in everyday life?

Back

A stretched rubber band has potential energy because it can do work when released.

Front

What is an example of kinetic energy in everyday life?

Back

A moving car has kinetic energy because it is in motion.

Front

What is energy conversion?

Back

Energy conversion is the process of changing energy from one form to another, such as converting electrical energy into light energy.

Front

What type of energy does a battery store?

Back

A battery stores potential energy, which can be converted into electrical energy when used.

Front

What happens to energy in a closed system?

Back

In a closed system, energy is conserved; it can change forms but cannot be created or destroyed.

Front

What is the relationship between potential and kinetic energy?

Back

Potential energy can be converted into kinetic energy and vice versa, depending on the object's motion and position.

Front

What is an example of energy conversion from electrical to light?

Back

A light bulb converts electrical energy into light energy when it is turned on.