Sound Waves (Waves Inv. 2)

Why is there no sound in space? 

• there is no medium for the sound waves to travel through

• It does, it is too far away and the energy dissipates before it reaches us

• there is too much mass for the sound waves to travel through

What did you just learn about how sound travels in different mediums?

• the less dense the medium, the faster the speed of sound

• the more dense the medium, the faster the speed of sound

• density of the medium does not affect the speed of sound.

In a longitudinal wave instead of having crests and troughs, we have 

• nonsense we still have crests and troughs

• nodes and  antinodes

• compressions and rarefactions

What is the relationship between frequency and pitch?

• inversely proportional; high frequency means low pitch

• proportional; high frequency means high pitch

What happens to the sound when the frequency is doubled? 

• the sound is twice as loud

• the pitch is one octave lower

• the pitch is one octave higher

Resonance of a sound wave is caused by - 

 

• resounding of frequencies that amplify natural frequency

• decreasing frequency of a wave

So, in summary, frequency is ______ , and amplitude is _______

• pitch, loudness

• loudness, pitch