Conservation of Energy

Front

What is the law of conservation of energy?

Back

The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

True or False: Energy can be created or destroyed according to the law of conservation of energy.

Back

False

Front

What happens to mechanical energy when two surfaces interact due to friction?

Back

Some mechanical energy is converted into thermal energy.

Front

True or False: When you put on the brakes of a bicycle, friction causes some of the mechanical energy to transfer to thermal energy.

Back

True

Front

What does the law of conservation of energy imply about the total amount of energy in the universe?

Back

The total amount of energy in the universe remains constant.

Front

Which equation correctly represents mechanical energy?

Back

mechanical energy = kinetic energy + potential energy

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion.

Front

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state.

Front

Give an example of energy transformation in a pendulum.

Back

As a pendulum swings, potential energy is converted to kinetic energy and back to potential energy.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter, often resulting from the movement of particles.