Why is the shape of the earth geoid?
(a) It is slightly flattened at the poles
(b) It is spheroid at the poles
(c) Both (a) and (b)
Answers
Explanation:
answer 1:- The geoid is a shape like the surface of the Earth. It is a 3-D geometrical shape like an orange. ... The geoid is the shape that the surface of the oceans would take under the influence of Earth's gravitation and rotation alone, in the absence of other influences such as winds and tides.
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Answer:
a is the correct option
Explanation:
The geoid is the shape that the ocean surface would take under the influence of the gravity and rotation of Earth alone, if other influences such as winds and tides were absent. This surface is extended through the continents (such as with very narrow hypothetical canals). According to Gauss, who first described it, it is the "mathematical figure of the Earth", a smooth but irregular surface whose shape results from the uneven distribution of mass within and on the surface of Earth. It can be known only through extensive gravitational measurements and calculations. Despite being an important concept for almost 200 years in the history of geodesy and geophysics, it has been defined to high precision only since advances in satellite geodesy in the late 20th century.