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Unit 3 Lessons 1 and 2

Teacher: Denise Kearney
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Across
4
The amount of time required for one cycle is called the wave _____.
7
In a longitudinal wave, the area where particles are pushed together is called a __________.
11
How many cycles occur in an amount of time is called ____.
12
These waves travel as disturbances in electric and magnetic fields, and do not require a medium.
15
These waves require a medium.
17
A disturbance that transfers energy from one place to another.
18
Measured by the distance from one point on a wave to the identical point later on the wave (example: the distance between crest to crest).
20
Longitudinal and transverse waves can combine to form a _____ wave.
Down
1
Sound waves travel the fastest in a _______.
2
Sound waves travel the slowest in ____ air.
3
The height of the wave is the _____.
5
In this type of wave particles move back and forth in the same direction that the wave travels (parallel).
6
As a wave moves away from its source, the energy will ____.
8
In a longitudinal wave, the area where particles are spread apart is called _____.
9
Wave _____ is the speed at which a wave travels and is measured by wavelength divided by wave period or frequency times wavelength.
10
The material through which a wave travels.
13
In this type of wave, particles move perpendicularly to the direction the wave travels.
14
The lowest point on a wave.
16
Electromagnetic waves travel at the speed of ____ in empty space.
19
The highest point on a wave.