G7_SOUNDWAVES Online Task

Longitudinal waves means that the disturbance of the wave travels in different directions as the wave.

• True

• False

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

• frequency
• amplitude
• speed
• volume

The speed of a sound wave depends on

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

What is a pitch?

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

The number of wavelengths that pass a point each second

• frequency
• wavelength
• pitch
• amplitude

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

• compression
• rarefaction
• crest
• trough

If the distance represented by the letter A (the amplitude) were increased, how would it change the sound?

• The sound would be higher. 
• The sound would be lower. 
• The sound would be softer. 
• The sound would be louder. 

What is changed in the second picture?

• Someone is talking louder in picture 2
• Someone is talking softer in picture 2
• Someone is talking lower pitch in picture 2
• Someone is talking higher pitch in picture 2

What is changed in the second picture?

• Someone is talking louder in picture 2
• Someone is talking softer in picture 2
• Someone is talking lower pitch in picture 2
• Someone is talking higher pitch in picture 2

A back-and-forth motion causing particles to move close together generates a _________.

• rarefaction

• surface wave

• transverse wave

• compression