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Answer Key
Grade 7 Science: Waves — Properties, Sound, Light Applications
1.
a disturbance that transfers energy through matter or space
2.
distance from one wave crest to the next crest
3.
number of waves that pass a point in a given time
4.
maximum displacement from the rest position; related to energy/loudness or brightness ideas
5.
higher frequency usually means higher pitch
6.
larger amplitude usually means louder sound
7.
bouncing of a wave off a surface
8.
taking in of wave energy by a material
9.
distance from crest to crest
10.
number of waves per time
11.
maximum displacement from rest; related to energy
12.
higher frequency → higher pitch
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