# Please help check physical science!

Please help check my answers I really want to make a 100%!

1. A mechanical wave moves through a medium, which can be (1 point)
A. a liquid.
B. a solid.
C. a gas.
D. all of the above <-- This one

2. Which type of kind of wave causes the medium to vibrate only in a direction parallel to the wave’s motion? (1 point)
A. a transverse wave
B. a surface wave
C. a longitudinal wave <-- This one
D. none of the above

3. A disturbance sends ripples across water in a tub. These ripples are an example of a (1 point)
A. rarefaction.
B. longitudinal wave.
C. compression.
D. surface wave. <-- This one

4. Sound is an example of what kind of wave? (1 point)
A. transverse wave
B. longitudinal wave
C. surface wave
D. wavelength <-- This one

5. Waves carry __________ from one place to another. (1 point)
A. energy
B. crests <-- This one or A not sure
C. troughs
D. wavelengths

Thank you so much!!

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1. 1,2,3 OK
4: eh? how can a wave be a wavelength?
4B

5A
crests don't actually go anywhere. The medium moves back and forth, causing crests and troughs.

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2. Hey everyone I'm Bill Nye from bill Nye the science guy and I saw your question and I just wan to say that I'm so happy that your putting this effort towards this! Also to answer your question you are correct on all of them.

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3. Steve is right & bill nye the science guy saying the first person was right on all of them is false. Thanks Steve I got 100%

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4. Steve is a correct 100%

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5. 1. D
2. C
3. D
4. B
5. A
I give all credit to Steve^^^^ I just put the answers down so it was quicker and easier.

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6. ^ 100%

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7. still right for 2020!

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8. gotteem

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