Waves, Light, Sound Practice Test

Front

What is diffraction?

Back

Diffraction is the bending of waves around obstacles and openings.

Front

Which color of light has the longest wavelength?

Back

Red light has the longest wavelength among visible light.

Front

What is constructive interference?

Back

Constructive interference occurs when two waves meet and combine to make a wave with a larger amplitude.

Front

What is the reason an apple appears red?

Back

An apple appears red because it reflects red light waves and absorbs other colors.

Front

What is the relationship between wavelength and pitch in sound waves?

Back

Lower pitch sound waves have longer wavelengths.

Front

What is reflection in terms of waves?

Back

Reflection is when a wave bounces back after hitting a barrier.

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another.

Front

What is the speed of sound in air?

Back

The speed of sound in air is approximately 343 meters per second at room temperature.

Front

What is the difference between transverse and longitudinal waves?

Back

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

Front

What is a wave's amplitude?

Back

Amplitude is the maximum distance the wave moves from its rest position.