Energy Unit Review 2023

Front

What is Potential Energy?

Back

Potential energy is the stored energy in an object due to its position or state. For example, a rock at the top of a hill 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 factors affect Kinetic Energy?

Back

Kinetic energy depends on two factors: mass and speed. The formula is KE = 1/2 mv², where m is mass and v is speed.

Front

What is Mechanical Energy?

Back

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

Front

What is Thermal Energy?

Back

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 is Chemical Energy?

Back

Chemical energy is the energy stored in the bonds of chemical compounds, like food and fuel. It is released during a chemical reaction.

Front

What is Electromagnetic Energy?

Back

Electromagnetic energy is a form of energy that travels through space as waves, such as light, radio waves, and X-rays.

Front

What is the relationship between mass and kinetic energy?

Back

The greater the mass of an object, the more kinetic energy it has when moving at the same speed as a lighter object.

Front

What is the relationship between speed and kinetic energy?

Back

Kinetic energy increases with the square of the speed. If the speed doubles, the kinetic energy increases by four times.

Front

What is an example of Potential Energy?

Back

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