1.05 Sound

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Sound Waves Review

Answer the following questions to test your understanding of sound waves!

______ is defined as a movement back and forth or up and down.
1. wave
2. medium
3. vibration
4. motion
Answer: Vibration is defined as a movement back and forth or up and down.

The highest and lowest points of a sound wave are called ______ and _______.
1. crest and trough
2. wavelength and amplitude
3. volume and pitch
4. wave and length
Answer: The highest and lowest points of a sound wave are called the crest and trough. The Crest is the highest and the trough is the lowest.

In order for sound to be heard it must travel through a ______.
1. amplitude
2. medium
3. length
4. trough
Answer: In order for a sound to be heard it must travel through a medium.

_______ is the distance from the rest point to the crest on a sound wave.
1. amplitude
2. wavelength
3. trough
4. crest
Answer: Amplitude is the distance from the rest point to the crest on a sound wave. It also determines the volume (how loud or soft) a sound is.

_______ is the distance from one crest to the next adjacent crest.
1. wavelength
2. length
3. amplitude
4. trough
Answer: Wavelength is the distance from one crest to the next adjacent crest.

____ _____ is the straight, black line in the middle of the sound wave digram, which represents the medium that sound is travelling through.
1. time signature
2. parallel line
3. rest position
4. straight line
Answer: Rest position is the straight, black line in the middle of the sound wave, which is the medium that sound is travelling through.

The wavelength determines the _______ of a note, which is how high or low a note is.
1. pitch
2. sound
3. size
4. volume
Answer: The wavelength determines the pitch of a note, which is how high or low a note is.

You've completed this review of sound waves! Play as often as you wish!