24 7th Comprehensive Science 2nd Nine Weeks Review

Front

What type of waves are used by night vision goggles?

Back

Infrared waves

Front

What is the total energy of all the particles in an object called?

Back

Thermal energy

Front

Which portion of the electromagnetic spectrum can be detected by the human eye?

Back

Visible light

Front

What is the correct energy transformation when a young boy shoots a slingshot at a target?

Back

Mechanical → Elastic potential → Elastic kinetic

Front

What happens to sound in a vacuum?

Back

It cannot travel.

Front

What is the definition of thermal energy?

Back

The total energy of all particles in an object.

Front

What is visible light?

Back

The range of light that can be detected by the human eye.

Front

What is the difference between a conductor and an insulator?

Back

A conductor allows electricity to flow through it, while an insulator does not.

Front

What is the role of infrared waves in technology?

Back

Infrared waves are used in night vision devices and remote controls.

Front

What is the energy transformation in a rubber band when it is stretched?

Back

Elastic potential energy is stored when stretched.