Grade 8 Energy Review

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

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is also known as heat energy.

Front

What type of energy transformation occurs when a hawk eats a mouse?

Back

The transformation is from chemical energy (in the mouse) to mechanical energy (used by the hawk to fly).

Front

At which point of a roller coaster is potential energy the greatest?

Back

Potential energy is greatest at the highest point of the roller coaster, typically labeled as point W.

Front

What energy transformation occurs when a lamp is functioning?

Back

The transformation is from electrical energy to light energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion, dependent on its mass and velocity.

Front

What is potential energy?

Back

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

Front

What is an example of mechanical energy?

Back

Mechanical energy is the sum of potential and kinetic energy in an object, such as a moving car.

Front

What is the difference between renewable and non-renewable energy sources?

Back

Renewable energy sources can be replenished naturally (like solar and wind), while non-renewable sources (like coal and oil) cannot be replaced once used.

Front

What is electrical energy?

Back

Electrical energy is the energy caused by the movement of electrons through a conductor.