8th Grade Energy

What happens to the gravitational potential energy of an object as it is raised to a higher elevation?

• It increases

• It decreases

• It converts to kinetic energy

• It remains the same

Which word describes the Energy of Motion.

• Potential Energy

• Kinetic Energy

• Chemical Energy

• Nuclear Energy

Potential energy depends on

• mass and height

• height and speed

• mass and speed

• height and force

Which word describes stored energy as a result of position?

• Radiant Energy

• Thermal Energy

• Potential Energy

• Electrical Energy

What is the unit of measurement for energy?

• Watt

• Joule

• Pascal

• Newton

Which skier will have a greater potential energy? 

• Skier 1
• Skier 2

What happens to the potential and kinetic energy of a gravity car when mass is added?

• The PE increases, but he KE decreases.

• Both the PE and KE will increase.

• Both the PE and KE stay the same.

• Only the KE increases, the PE stays the same.

The formula for Kinetic Energy is KE= 1/2 x Mass x Velocity².

A car is going down a ramp. It has a mass of 30 kg and a Velocity of 10 m/s. What is it's kinetic energy?

• 150 J

• 1500 J

• 300 J

• 3000 J

Which of the following is an example of kinetic energy?

• A rock at the top of a hill

• A moving car

• A compressed spring

• A charged battery

The formula for Potential Energy is PE= Mass x Gravity x Height

If I have a ball that has a Mass of 2 kg, with a gravity of 9.8 m/s, and a height of 3 m off the ground, what is my Potential Energy?

• 6 J

• 50 J

• 30 J

• 58.8 J