Potential Energy Quiz Review

Grade Science 7

Potential Energy Quiz Review

Which slide provides the most gravitational potential energy?

• The blue one of course because of it's height!

How does the gravitational potential energy of the first hill compare to the second hill?

• Probably close to double the amount of Graviational PE in the first hill compared to the second due to it being almost twice as tall.

Use this formula to calculate the following:

• What is the KE of a 100 Kg go-kart travelling at a speed of 2 m/s?

• Solve then go to the next slide for the answer.

Answer:

200 Joules

Which kind of energy transformation occurs here?

• Gravitational to Kinetic!

Which kind of energy does the girl transfer to the soccer ball?

• (kinetic!)

Be sure to review examples of these different types of energy and how they compare.

• Electromagnetic Energy

• Gravitational PE

• Sound Energy

• Mechanical Energy

What type of energy does light energy convert to through this process?

• Chemical Energy!

How does reducing rolling friction help a skateboarder?

• (reducing energy necessary to roll!)

  
  

Use this formula to solve the problem below:

• To dig up some dirt, you apply 20.0 N of force to a shovel. The shovel applies 300.0 N of force to the dirt. What is the mechanical advantage of the shovel?

• 15

Work= Force x Distance

• Solve: A golfer hits a golf ball with a force of 600 N. If the force of the golf club is applied through a distance of 0.02 meter, how much work does the Golf club do?

• (12 J)