Extra Credit Assignment for Energy Test

Which of the following is true about energy?

• Energy is the ability to do work or cause change.
• Energy cannot be created or destroyed
• Energy is a form of matter
• Energy is always in a state of rest

Which of the following is an example of potential energy?

• Rock rolling down hill

• Moving car
• A running river

• Stretched rubber band

When does kinetic energy reach its maximum value?

• When the object is at rest
• When the object is at its highest point of motion

• At the lowest point of an object's motion

• When the velocity of an object is at its minimum

Which factor affects the amount of kinetic energy possessed by an object?

• Color of the object
• Weight of the object
• Shape of the object
• Speed of the object

What is the relationship between kinetic and potential energy?

• Potential energy is not a real form of energy
• Kinetic energy is always greater than potential energy
• They are completely independent of each other
• They can be converted into each other

When a pendulum reaches its highest point, what type of energy does it possess?

• Mechanical energy
• Thermal energy
• Potential energy
• Kinetic energy

A ball is thrown into the air. At the highest point of its trajectory, what type of energy does it possess?

• Thermal energy
• Chemical energy
• Kinetic energy
• Potential energy

Which of the following is an example of a chemical energy transformation?

• Charging a phone
• Boiling an egg
• Burning wood
• Freezing water

Which of the following is an example of a mechanical energy transformation?

• Geothermal power plant producing steam
• Windmill grinding grain
• Hydroelectric dam generating electricity
• Solar panel heating water

Which of the following is an example of a thermal energy transformation?

• Freezing water in a refrigerator
• Cracking an egg

• Charging a phone battery
• Heating water on a stove