Sound Waves on Quizizz Regrade 03/07/18

Question: 

 Right Answer: False

 Explanation: The correct answer is false to the statement "Light is a mechanical wave" because light is an electromagnetic wave. Light is an electromagnetic wave because it doesn't need a medium to pass through.


Question:

 Right Answer: reflection

Explanation: This is because the wave is bouncing off of a surface which is the act of reflecting. Reflection is the bouncing back of light, heat, or sound while diffraction is when a beam of light or another type of wave is "spread out" because it traveled through a small opening or on an edge. Following the definition, it would mean that the answer would be reflection.


 Question: 

Right Answer: Second Beaker (Solid)

 Explanation: The second beaker is the correct answer because the molecules are compacted in a manner that sound waves can travel quickly. Part of the reason that sound waves can travel quickly in this particular beaker is that there are no gaps between the molecules so the sound will not lose its energy.

Question:

 Right Answer: back and forth

 Explanation: Back and forth is the correct answer to this question because a transverse wave is a wave that moves back and forth in a rhythm, or oscillates, meaning that it moves back and forth.
Question:

 Right Answer: Because there are less/no gaps between molecules so sound can travel from molecule to molecule without losing energy.

 Explanation: This is the correct answer because the molecules in a solid are so compact that there are little to no gaps. This allows sound to travel faster because it doesn't have to waste energy traveling through those gaps.


Question:

 Right Answer: Only a small part of it.

 Explanation: "Only a small part of it" is the correct answer because there are a few things on the electromagnetic spectrum that are visible. An example of this would be visible light, which hence the name is visible. This shows that there are a few things on the electromagnetic spectrum that are visible to the human eye.




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