Question

Caus. Why sun sun shape oval
at sunrise and will circle at noon​

Answer 1

Answer:

At sunrise and sunset, the sun is near the horizon. The rays of light from the upper part and lower part of the periphery of the sun bend unequally on travelling through earth's atmosphere. That is why the sun appears oval or flattened at the time of sunrise and sunset.

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Answer 2

When the sun rises or set, the sun shape is oval because of the following reasons.

• At sunset and, sunrise the sun is located near the horizon.  

• The light rays from the upper portion and lower portion of the periphery of the sun bend unequally on traveling through the earth's atmosphere. This is the reason why the sun appears flattened or oval or at the time of sunset and sunrise.

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