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Module #14 & #15 Crossword

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Across
4
The direction this wave travels is parallel to the direction it oscillates
6
Carries electrical signals from the eye to the brain
8
Items used by humans every day to see their reflection
9
Highest energy, shortest wavelength item on the electromagnetic spectrum
10
When light bounces off of an obstacle
11
An indication of how high or low a sound is
12
Needed to change the shape of the lens in the human eye
17
The longest waves on the electromagnetic spectrum
19
Opening in a human eye where light enters
22
When sound waves bounce off of body parts giving an image that can be seen
23
Type of waves that have high energy and allow us to see inside our body
24
When sound waves bounce off so we hear them return
26
Diverging lenses have this shape
27
Part of retina that is not sensitive to color
28
A longitudinal wave that we hear
29
Part of the sound wave that determines the loudness of the sound
Down
1
Part of the human eye necessary for focusing images on the retina
2
Changes made in the pitch of a sound due to the movement of the source of the sound
3
These give energy to water that then heats up food
5
Where the image appears to be in relation to a mirror when looking at a reflection in a mirror
7
The lowest point on a wave
13
When a light wave bends in response to the change of speed it is traveling
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When sound waves bounce off of objects to give a picture in the water
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The color part of the eye
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The direction this wave travels is perpendicular to the direction it oscillates
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Sound produced as the result of an object traveling at or above Mach 1
20
Type of light with a wavelength just a little longer than visible light
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The highest point on a wave
25
Behaves as a particle and a wave; can travel in a vacuum