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Physics week 6

name: ______________________________
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Across
1
The material through which a wave travels.
5
Areas of higher density or pressure in a wave.
7
The number of waves that pass a certain point per second.
11
A disturbance that carries energy through space.
13
A measure of how high or low a sound is, proportional to the frequency of the sound wave.
15
Interference between waves that results in a wave of greater amplitude.
17
The magnitude of the distance an object travels per unit of time.
18
The amount of energy that flows past a certain area in a given amount of time.
20
The effect resulting when a source of waves is moving toward or away from an observer, resulting in a "bunching" (increase in frequency) of waves as it approaches, and a "spreading out" (decrease in frequency) of waves as it recedes.
23
A type of mechanical wave that travels via the vibration of particles in a substance, such as air.
24
A graph that uses parallel bars with lengths equal to the values they represent.
25
The phenomenon that causes waves to bounce off of surfaces.
Down
2
Interference between waves that results in a wave of lower amplitude.
3
The difference between a measured or estimated value and the value that is accepted to be correct.
4
A phenomenon that occurs when two waves interact, forming a single wave with greater or lower amplitude.
6
Shaking or oscillation of matter within a medium.
8
Areas of low density or pressure in a wave.
9
Groups of two or more atoms covalently bonded together; they do not carry a net charge.
10
The unit of sound intensity.
12
The height of a wave, measured from center to peak.
14
A circle divided into sections that represent parts of the whole.
16
Set quantities used as a standard of measure for some parameter.
19
Variations in volume that occur when sound waves alternate between constructive and destructive interference.
21
A diagram, normally on an x-axis and y-axis, that illustrates how changes to one variable affect the value of another variable.
22
The loudness or softness of a sound, proportional to the amplitude of the sound wave.