Unit 11 - Light and Sound Waves

Front

What is energy in the context of waves?

Back

Energy is the ability to do work or cause change, and in the context of waves, it is what is transferred through the medium when a wave travels.

Front

What are electromagnetic waves?

Back

Electromagnetic waves are waves that can travel through empty space and do not require a medium. They include visible light, radio waves, and X-rays.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of electromagnetic radiation, ordered by wavelength from longest (radio waves) to shortest (gamma rays).

Front

What is the correct order of waves on the electromagnetic spectrum from longest to shortest wavelength?

Back

Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma.

Front

What is a medium in the context of sound waves?

Back

A medium is a substance through which sound waves can travel, such as air, water, or solid materials.

Front

What happens to particles in a wave at Point C?

Back

At Point C, the particles are close together, indicating a compression in a longitudinal wave.

Front

How do sound waves travel?

Back

Sound waves travel by causing particles in a medium to vibrate, transferring energy from one particle to the next.

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel through, while electromagnetic waves can travel through empty space.

Front

What is reflection in terms of waves?

Back

Reflection is the bouncing back of a wave when it hits a barrier or a different medium.

Front

What is refraction in terms of waves?

Back

Refraction is the bending of waves as they pass from one medium to another due to a change in speed.