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15
×
What happens to the amplitude of the wave when it undergoes destructive interference?
it becomes smaller/it cancels out
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15
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The term used for the lower part of the wave
trough
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15
×
A sound wave causes particles to vibrate 150 times in two seconds. What is its frequency?
75 Hz
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15
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What happens to the pitch when the amplitude increases?
it stays the same
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baam
Lose 15 points!
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rocket
Go to first place!
Okay!
×
gift
Win 10 points!
Okay!
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banana
Go to last place!
Oops!
15
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What is the range of frequency that a human ear can detect?
20 - 20 000 Hz
15 - 15 000 Hz
25 - 25 000 Hz
10 - 10 000 Hz
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15
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Which will cause the pitch to increase?
make the wave larger
make the wave smaller
increase the number of vibrations
decrease the number of vibrations
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15
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What happens to the frequency of the wave when it undergoes constructive interference?
it stays the same
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15
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Which will cause the sound to get louder?
refraction of wave
reflection of wave
cancellation of wave
reinforcement of wave
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15
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What happens to the pitch when the frequency decreases?
The pitch decreases
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15
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Which describes frequency?
the number of time the particles move
the maximum distance that particles move
the direction that the particles move
the minimum distance that particles move
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15
×
Give a use for destructive interference.
Noise cancelling headphones
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boom
Lose 50 points!
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seesaw
Swap points!
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gift
Win 25 points!
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banana
Go to last place!
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trap
No points!
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shark
Other team loses 20 points!
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gift
Win 20 points!
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thief
Give points!
5
10
15
20
25
×
boom
Lose 50 points!
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gold
Win 50 points!
Okay!
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rocket
Go to first place!
Okay!
×
lifesaver
Give 25 points!
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15
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the term used when two waves subtract
constructive interference
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