Conservation of Energy

Front

What happens to the potential energy of a rock as it falls off the side of a cliff?

Back

The potential energy decreases as the kinetic energy increases.

Front

According to the Law of Conservation of energy, what is true about the total amount of energy before and after a reaction?

Back

The total amount of energy is conserved.

Front

What does the Law of Conservation of Energy state?

Back

Energy cannot be created or destroyed. It only changes forms.

Front

What does potential energy depend on?

Back

Potential energy depends on mass and height.

Front

What types of energy does a television transform electrical energy into?

Back

Light, thermal, and sound.

Front

Define kinetic energy.

Back

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

Front

What is the formula for calculating gravitational potential energy?

Back

Potential Energy (PE) = mass (m) × gravitational acceleration (g) × height (h).

Front

What is the principle of energy transformation?

Back

Energy can change from one form to another, but the total energy remains constant.

Front

What is an example of energy conservation in a pendulum?

Back

At the highest point, potential energy is maximum and kinetic energy is minimum; at the lowest point, kinetic energy is maximum and potential energy is minimum.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of potential energy and kinetic energy in a system.