Show:
Sound 1
Sound 2
Sound 3
Sound 4
Sound 5
100
Sound is a form of ______.
Energy
100
The medium in which sound travels the fastest.
solid
100
What is the distance between two compressions called?
wavelength
100
Which frequency would have a lower pitch? A. 200 waves per second B. 500 waves per second C 1000 waves per second
A
100

What can you do to a guitar string to make the vibration have a taller amplitude?

pluck it more strongly

200

Sound travels in _______.

Compression or Longitudinal Waves

200
The medium in which sound travels the slowest.
gas
200
Is there sound in space? Why or why not?
No, because there is no medium (no molecules) for sound to travel through.
200
The unit frequency is measured in.
hertz
200

Name an animal that uses echolocation.

bats, dolphins, whale

300
The back and forth movement of matter.
vibration
300
Why sound travels through a solid the fastest.
The molecules are closer together.
300
The number of waves in a given amount of time. For example, 200 waves per second.
Frequency
300

What could you do to a guitar string to make the pitch get higher? (Think about our squawkers!)

You could make the string shorter.

300
What is a vacuum? Is sound possible in a vacuum?
The absence of matter, like in space where there are no molecules. There is no sound in space because there are no molecules to vibrate.
400
Part of the wave where molecules are very close together.
compression
400
Why sound travels the slowest in a gas.
The molecules are farther apart.
400
How high or low a sound is.
Pitch
400
How loud or soft a sound is determined by the _________ of the wave.
amplitude
400

What technology do humans use that is similar to echolocation?

sonar and ultrasound

500
Part of the wave where the molecules are spread out.
rarefaction
500
Does sound travel in a straight line or outward in all directions?
Outward in all directions
500
Which frequency would have a higher pitch? A. 200 waves per second B. 500 waves per second C 1000 waves per second
C
500
What can you do to a guitar string to make the vibration have a shorter amplitude?
pluck it more softly
500
What is echolocation?
Using an echo to locate an object or determine distance.