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प्रश्न
Describe any three experiments to prove the Spherical Shape of the Earth.
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उत्तर
If you observe a ship approaching sea coast, the top of the mast is seen first and the hull, lower parts are seen gradually. Due to the curvature of the Earth, the whole ship is not seen at one time.
Fix three poles of equal length at equal distance on the ground. These do not give a horizontal level. The top of the middle pole looks higher than the other two poles due to the curvature pf the Earth. This experiment was done by Mr A.R. Wallace on Bedford canal.
If you look around at the Earth’s horizon (where Earth and sky appear to meet), it will everywhere and always appear circular. It widens with increasing altitude due to Spherical Earth.
संबंधित प्रश्न
Where is asthenosphere found?
Why is the earth’s interior in most part found in a solid state despite great heat and pressure?
How do the study of meteorites helps scientists to know about the interior of the earth?
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Label the parts: (1), (2), (3), (4) and (5).
Study the figure on the side and answer the question
What is known as Sial? How deep is the area marked by Sial?
“Even when the Earth is spherical, it appears to be flat.” Discuss.
Give two reasons why tremors occur inside the earth?
What is SIMA?
Give reason for the following:
The Earth’s gravitational force
Composite volcanoes are commonly found in the ______ocean.
