Types of Energy

Which of the following statements is true?

• Potential energy is the only type of energy that cannot be transformed into another type of energy.

• Potential energy is the energy that objects have due to their motion.

• Potential energy is the energy that electrons and other charged particles have due to their motion.

• Potential energy is the stored energy that an object has due to its position, shape, or chemical make up.

Which of the following objects has kinetic energy?

• an apple sitting on a desk

• a book lying on a table

• a rock falling off a cliff

• a shirt folded on a chair

Directions: Select the correct answer. Mrs. Roberts is holding a stack of books in her arms. If she suddenly dropped the books, this would increase their ______ energy. If she instead decided to hold the books over her head, this would increase their ______ energy.

• If she suddenly dropped the books, this would increase their kinetic energy. If she instead decided to hold the books over her head, this would increase their potential energy.

• If she suddenly dropped the books, this would increase their potential energy. If she instead decided to hold the books over her head, this would increase their kinetic energy.

• If she suddenly dropped the books, this would increase their thermal energy. If she instead decided to hold the books over her head, this would increase their chemical energy.

• If she suddenly dropped the books, this would increase their sound energy. If she instead decided to hold the books over her head, this would increase their electrical energy.

What is different about pull #1 and pull #2?

• The slingshot has more elastic potential energy in pull #1.

• The slingshot has more gravitational potential energy in pull #1.

• The slingshot has more kinetic energy in pull #2.

• The slingshot has more elastic potential energy in pull #2.

Which of the following objects has the most kinetic energy?

• a car going 60 miles per hour

• a bicycle going 10 miles per hour

• a spring that is compressed

• a rock sitting on the edge of a cliff

What is the relationship between fossil fuels and energy?

• Fossil fuels are a form of nuclear energy.

• Fossil fuels are a form of mechanical energy.

• Fossil fuels are a form of geothermal energy.

• Fossil fuels are a form of chemical energy.

Thermal energy is a form of...

• chemical energy.

• kinetic energy.

• electrical energy.

• potential energy.

Four identical rocks are sitting on the ground. The rock with the most gravitational potential energy is:

• the one placed at the highest point above the ground

• the one with the largest mass

• the one closest to the ground

• the one farthest from the center of the group

A red balloon and a blue balloon are each rubbed against a woolen sweater, giving them equal negative electric charges. If the balloons are tied to the same meter stick, which diagram represents the system with the greatest amount of electrical potential energy?

• The diagram where the balloons are closest together

• The diagram where the balloons are farthest apart

• The diagram where the balloons are touching

• The diagram where the balloons are at a medium distance apart

Two electrically charged particles in close proximity to one another have electrical potential energy. The amount of energy is dependent on the charges of the particles and the distance between the particles. The table below shows the positions of two particles relative to each other. The particles have the same charge. | Position Number | Distance Between Particle 1 & Particle 2 (in mm) | |----------------|-----------------------------------------------| | 1 | 2 | | 2 | 4 | | 3 | 6 | | 4 | 8 | At which position do the particles have the greatest electrical potential energy?

• position 2

• position 1

• position 3

• position 4