Question

Define the following ?
1.Geoid
2.Continents
3.Prime meridian

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Answer 1

Answer:

1. The geoid (/ˈdʒiːɔɪd/) 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).
2. A continent is one of several large landmasses. Generally identified by convention rather than any strict criteria, up to seven regions are commonly regarded as continents. Ordered from largest in area to smallest, these seven regions are: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.
3. A prime meridian is the meridian in a geographic coordinate system at which longitude is defined to be 0°. Together, a prime meridian and its anti-meridian form a great circle. This great circle divides a spheroid into two hemispheres

Answer 2

Answer:

1. Geoid= It is the shape that the ocean surface would take under the influence of the gravity and rotation of the earth, if other influences such as wind, tides were absent.

2. Continents = Large continuous mass of land conventionally regarded as collective region. They loosely cooperate with the positions of Tectonic plates.

3. Prime Meridian= Line drawn north to south at 0⁰ longitude.