Please identify what is happening at letter A and what is happening at letter B, using scientific vocabulary we learned in class. Explain your reasoning. What type of wave (longitudinal or transverse) is this and why?

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the dark spot , A is called compression...

and B is called rarefraction

hope it helps UHH...

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as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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