Front

Why does an apple appear red?

Back

All colours are absorbed except for red, which is reflected.

Front

What types of mechanical waves exist?

Back

Mechanical waves can be transverse or longitudinal.

Front

What happens when light shines through a prism?

Back

It creates a spectrum.

Front

What determines how much energy a wave carries?

Back

Amplitude.

Front

How do sound waves travel?

Back

As longitudinal waves.

Front

What is the definition of wavelength?

Back

The distance between successive crests of a wave.

Front

What is the speed of sound in air at room temperature?

Back

Approximately 343 meters per second.

Front

What is the difference between transverse and longitudinal waves?

Back

Transverse waves oscillate perpendicular to the direction of wave travel, while longitudinal waves oscillate parallel.

Front

What is the relationship between frequency and wavelength?

Back

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

Front

What is the unit of frequency?

Back

Hertz (Hz).