Law of Conservation of Energy Assessment

What is the definition of kinetic energy?

• Energy stored in chemical bonds

• Energy of motion

• Energy stored due to position

• Energy from the sun

Which of the following is an example of potential energy?

• A moving car

• A stretched rubber band

• Boiling water

• A ringing bell

Which type of energy is transferred when you rub your hands together and they become warm?

• Electrical energy

• Thermal energy

• Nuclear energy

• Sound energy

What does the Law of Conservation of Energy state?

• Energy can be created but not destroyed

• Energy can be destroyed but not created

• Energy cannot be created or destroyed, only transformed

• Energy is always lost in a system

Which of the following is NOT a type of potential energy?

• Gravitational potential energy

• Elastic potential energy

• Chemical potential energy

• Light energy

What is a closed system?

• A system that exchanges energy and matter with its surroundings

• A system that exchanges only energy with its surroundings

• A system that does not exchange energy or matter with its surroundings

• A system that only exchanges matter with its surroundings

Which of the following is an example of energy transformation?

• A book sitting on a table

• A ball rolling down a hill

• A glass of water at rest

• A closed box

What is the main form of energy produced when friction occurs?

• Sound energy

• Thermal energy

• Nuclear energy

• Electrical energy

Which formula is used to calculate kinetic energy?

Which of the following best describes thermal energy?

• Energy due to an object’s position

• Energy stored in food

• Energy related to the temperature of an object

• Energy of moving electrons