Science, asked by ananya1459, 11 months ago

How it is proved by looking pole star that the earth is spherical in shàpe?​


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Answers

Answered by shashaang1234
1

Answer:

Explanation:

Pole Star is the brightest star in the night sky, when one looks up to the sky from any place on the earth.

As it is a huge star that is far away from earth, it looks stationary even though the earth is rotating.

When looked from the North Pole, it appears to be vertically above and closest to the earth.

However, its position seems to change a bit to a tilting position, as a person moves away from the North Pole, thus proving that the earth is a sphere.

Read more on Brainly.in - https://brainly.in/question/333881#readmore


ananya1459: Thanks, but not clear so well.
shashaang1234: The Pole Star can be seen at 90° at the North Pole. It lies in the line with the axis of the earth, and it's angle decreases towards the Equator. At the Equator, the angle is 0°. This can happen only in an arc of a circle. If the earth was flat, the Pole Star would have been the same height for all latitudes.
ananya1459: Thank u. Now it is clear.
Answered by NishchhalJha
2

The Pole Star can be seen at an angle of 90° at the North Pole, as it lies directly at the line of axis of the earth, while its angle decreases towards the Equator i.e. it is 0° at the equator. It is only possible in an quarter arc of a circle. It proves that the earth is a sphere with circular surface.

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