explain how boat used echo to find out the depth of water.
the boat send the sound to the surface and the echo reflected, calculate the distance by using equation.
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15
Sound waves will transfer fastest through _______.
solids
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seesaw
Swap points!
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fairy
Take points!
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25
rocket
Go to first place!
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lifesaver
Give 25 points!
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15
When Qi Zhe yells his name in a cave, the sound reflects off the walls of the cave and travels back to his ears. What is this sound called?
echo
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trap
No points!
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fairy
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25
gift
Win 20 points!
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lifesaver
Give 10 points!
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15
High frequency = _______ Pitch
High
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20
Will sound be absorbed or reflected by these objects: brick, concrete, glass, tile, wood
Reflected
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15
The loudness of a sound is directly related to the wave's _____.
amplitude
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25
Using particle theory, explain the speed of sound in solid and in gas medium.
solid particle closely pack together, the transfer the vibration faster than in other medium. Gas particles are far way from one another., transfer slower.
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20
name two things that are required for sound reflection.
hard surface and sound wave.
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banana
Go to last place!
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shark
Other team loses 15 points!
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fairy
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25
banana
Go to last place!
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25
Why will sound echo in an empty room? explain your answer.
Yes, because there are only hard surfaces so sound only reflects.
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15
What shape does sound travel in?
waves
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15
[T/F] : Sound travels through a vacuum
False
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15
Will a LOUD sound will have a high or low amplitude?
