Mechanical Waves

If you want to change the pitch of a sound, you have to change the ___

• frequency
• amplitude
• speed
• volume

This is the unit used to measure the volume of a sound. 

• Decibel
• Medium
• Vibration
• Oscilloscope

This is what you get when sound waves are reflected, or bounce back, off of a hard surface.

• Amplitude
• Pitch
• Volume
• Echo

Tags

NGSS.MS-PS4-2

The speed of a sound wave depends on

• the frequency
• the medium
• both air temperature and medium
• the air temperature

Tags

NGSS.MS-PS4-1

What is a pitch?

• highness or lowness of a sound
• the intensity of a vibration
• the amplitude of the sound wave
• volume of sound

Bats use ________ to locate mosquitoes in the air.

• solar

• ecology

• echolocation

• refraction

A part in a longitudinal wave where the particles are spread apart

• compression
• rarefaction
• crest
• trough

The part of a longitudinal wave where the particles of the medium are close together.

• rarefaction
• compression
• crest
• trough

A disturbance that travels through a medium as a longitudinal wave

• sound
• wavelength
• pitch
• frequency

The number of wavelengths that pass a point each second

• frequency
• wavelength
• pitch
• amplitude