FOSS PostTest Waves Review

Front

What is compression in sound waves?

Back

Compression is the area where air is pushed together by vibrations, creating regions of high pressure in sound waves.

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is made of electric and magnetic waves that can travel through space without a medium.

Front

What happens to colors when an object appears blue?

Back

When an object appears blue, it absorbs all colors except blue, which is reflected.

Front

What color is reflected when a shirt appears yellow?

Back

When a shirt appears yellow, the color being reflected is yellow.

Front

What part of the spectrum does light with a wavelength of 650 nanometers (nm) fall under?

Back

Light with a wavelength of 650 nm falls under the visible light spectrum.

Front

What is a sound wave?

Back

A sound wave is a type of mechanical wave that travels through a medium (like air) due to vibrations.

Front

What is pitch in sound?

Back

Pitch is the perceived frequency of a sound, determining how high or low it sounds.

Front

What is the speed of sound?

Back

The speed of sound is the distance that sound waves travel through a medium in a given amount of time.

Front

What is reflection of light?

Back

Reflection of light is the bouncing back of light waves when they hit a surface.

Front

What is absorption of light?

Back

Absorption of light is when light waves are taken in by an object, preventing them from being reflected or transmitted.