Sound Physics

Ryan makes an instrument from a drinking straw as shown. If he cuts the straw in half, what will happen to the pitch?

• decreases

• increases

• it will remain the same

• there is no sound

Which sound would most likely have the highest pitch?

• a lion's roar

• a dog's growl

• a man yelling

• a bird singing

Sound moves in a _________.

• Transverse wave
• Longitudinal wave

How is sound produced?

• By the vibration of particles
• By the transfer of particles 

Area of a longitudinal wave where particles are CLOSE together.

• Compression
• Rarefaction

Area of a longitudinal wave where particles are APART. 

• Compression
• Rarefaction

Soft surfaces _______ sound waves. 

• Reflect
• Absorb

________ describes how LOUD a sound is. 

• Amplitude
• Frequency 

____________ is determined by sound wave's frequency. 

• Compression
• Pitch 

_______ is the number of waves that pass a certain point at an specific time. 

• Frequency 
• Pitch
• Amplitude
• I don't know