Unit 2 Lessons 1-6 Soundwaves

The distance between crests of waves is called the _________

• Amplitude

• Speed

• Wavelength

• Frequency

Changing the amplitude of a sound wave changes

• loudness

• tone

• pitch

• speed

What do all waves have in common?

• transfer energy

• transfer matter

• transfer ideas

• transfer only sound

Select all of the true statements about waves

• wavelength undergoes regular changes

• wavelength is constant unless energy is added or taken away

• They have a regular repeating pattern

• Waves travel with random changes that can't be predicted

• Waves don't have amplitude because if they did you would be able to see them.

When the frequency of a wave decreases, the ______ of the wave increases

• Amplitude

• Frequency

• Wavelength

• wave speed

If you press down on a piano key, let's say middle C, it generates a sound wave. Now, imagine that you press it down much harder so that it still plays the same tone but much more loudly. How would pressing the key down harder change the sound wave produced?

• The sound wave's wavelength would increase.

• The sound wave's amplitude and energy would increase.

• The sound wave's frequency would increase.

• The sound wave's energy would decrease

The amplitude of a sound's waves determines the sound's ___________________.

• pitch

• loudness

• resonance

• sound quality

More rapid vibrations give ___________ pitch

• higher

• lower

• louder

• softer

Soundwaves travel faster through...

• solids than gases

• liquids then through gases

• a solid iceberg than in water

• none of these

Low frequency sound waves have a ________ wavelength and a ______ pitch

• longer; low

• shorter; higher

• faster; faster

• longer'; faster