STAAR Released Questions 5.6A Energy

Front

What is mechanical energy?

Back

Mechanical energy is the energy that an object has due to its motion or position. It is the sum of kinetic energy (energy of motion) and potential energy (stored energy).

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object.

Front

What is light energy?

Back

Light energy is a form of energy that is visible to the human eye. It is produced by the vibrations of electrically charged particles.

Front

What is sound energy?

Back

Sound energy is the energy produced by vibrating sound waves. It travels through air, water, and solids.

Front

What is an example of an object that uses mechanical energy?

Back

A bicycle uses mechanical energy when the pedals turn the wheels.

Front

What type of energy causes water to evaporate?

Back

Thermal energy from the environment causes water to evaporate.

Front

What is the role of gears in a bicycle?

Back

Gears in a bicycle help to change the speed and torque of the bike, allowing for easier pedaling.

Front

What is the difference between kinetic and potential energy?

Back

Kinetic energy is the energy of motion, while potential energy is stored energy based on an object's position.

Front

What is an example of a device that produces both sound and light energy?

Back

A firework produces both sound and light energy when it explodes.

Front

What is the purpose of a reflector on a bicycle?

Back

A reflector allows the bicycle to be seen at night, but it does not use mechanical energy.