Sound Waves 4/5

Sound waves are what kind of wave?

• Longitudinal
• Transverse
• Surface
• Electromagnetic

Tags

NGSS.MS-PS4-1

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

• frequency
• amplitude
• speed
• volume

What happens when you increase the amplitude of a sound?

• it makes the sound louder
• it makes the sound travel faster
• it increases the wavelength of the sound
• it increases the frequency of the sound

Tags

NGSS.MS-PS4-1

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

The speed of a sound wave depends on

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

True or False: Sound travels better through solids than through liquids

• True 
• False

What is a pitch?

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

Why is sound able to travel faster through a solid than a gas?

• Gas molecules are packed tightly.
• Sound does not travel faster through a solid than a gas.
• Solid molecules are packed tightly.
• Gas molecules move slowly.

How does a sound wave interact with a human ear?

• vibrates the ear drum and tiny hairs
• bounces off the ear canal
• rotates the ear drum
• vibrates the ear canal