Question

cycles are the nature's mechanism to maintain balance in the ecosy
Short Answer Questions
1. How can you prove that the earth is a sphere by looking at the Pole Star?
2. Briefly describe the shape of the earth.
3. What is the earth's mean temperature? State its one advantage.
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Answer 1

ANSWER

1)◆ 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.

2)◆The earth is Round.

It is not a perfect sphere, because there are mountains, trenches and bulging across the equator. It is more round than any ball bearing, billiard ball or glass marble. Looking at the earth from space, only the best telescope could see any deviation from that of a perfect sphere.

3)◆ The earth's means temperature is 17A° C. because of that life is possible.

★【MARK BRAINLIEST¶】