Why are geostationary satellites not use...

Why are geostationary satellites not useful for studies of polar regions ?

Text Solution

Verified by Experts

(i) Satellites revolving around the earth with the time period same as that of rotation of earth are called geostationary satellites.
(ii) These satellites revolve in orbits parallel to the equator of the earth at height of around 35780 km from the surface of the earth .
(iii) As, the orbits of such satellites are not useful for studies of polar region.

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A geostationary satellite

Revolves about the polar axis

Has a time period less than that of the near earth satellite

Moves faster than a near earth satellite

Is stationary in the space

Polar satellites

are sun-synchronous satellites.

cross the equator at different instants of time.

are used for communication purposes.

are also known as remote sensing satellites.

A geostationary satellite is one

which is used for geophysics

whose mass is equal to earth's mass

whose time period is same as that of earth

none of these