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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
What is the lithosphere?
State two chief characteristics of the earth’s crust.
Name two types of earth movements.
Which layer is responsible for earth’s magnetic field? Why?
“Even when the Earth is spherical, it appears to be flat.” Discuss.
Why is the Earth slightly flattened at the poles?
Give one word for the following :
A narrow block elevated between two normal faults.
______ layer is made up of liquid iron.
Give reason for the following:
Generation of the Earth’s Magnetic field.
Seismology deals with ______.
