Light and Sound

Front

What is the primary reason communication in space occurs using radio waves?

Back

Sound needs a medium (like air) to be carried, and space has no medium (it's a vacuum).

Front

How is the wavelength of a sound wave measured?

Back

From peak to peak or trough to trough.

Front

What type of wave frequency do microwaves rely on?

Back

Microwave frequency.

Front

Which electromagnetic waves are used by doctors to detect broken bones?

Back

X-rays.

Front

What is frequency defined as?

Back

The number of waves that pass over a specific time.

Front

What is a wave?

Back

A disturbance that transfers energy through space or a medium.

Front

What is the speed of light in a vacuum?

Back

Approximately 299,792 kilometers per second (km/s).

Front

What is the difference between mechanical waves and electromagnetic waves?

Back

Mechanical waves require a medium to travel through, while electromagnetic waves do not.

Front

What is the relationship between frequency and wavelength?

Back

They are inversely related; as frequency increases, wavelength decreases.

Front

What is an example of a longitudinal wave?

Back

Sound waves.