Chapter 4 Sound and Light

A longitudinal wave that is caused by vibrations and that travels through a material medium,

• sound wave

• light wave

• radio wave

• echo wave

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The distance between a point on a wave and the nearest point just like it.

• frequency

• wave length

• refraction

• compression

The number of wavelengths that pass a given point in one second.

• wave length

• sound wave

• frequency

• compression

The outer ear

• collects sound waves.

• amplifies sound

• converts vibrations to nerve signals that travel to the brain

Amplifies sound waves, it includes the eardrum and three tiny bones.

• outer ear

• middle ear

• inner ear

Converts the vibrations to nerve signals that travel to the brain.

• middle ear

• outer ear

• inner ear

The perception of how high or low a sound seems.

• pitch

• amplitude

• decibel

• echo

Amplitude of a wave is a measure of

• how high or low a sound is

• how bright or dark it is

• the displacement of the wave from its rest position.

• the amount of radiation that is in a wave.

Tags

NGSS.MS-PS4-1

A logarithmic unit used to measure sound level. It is also widely used in electronics, signals and communication.

• frequency

• decible

• amplitude

• pitch

A reflected sound wave

• wave lenght

• sound wave

• echo

• inner ear

Tags

NGSS.MS-PS4-2