Saha, Tapasya
(2018)
Teaching learning materials to understand some
geographical concepts.
Learning Curve (31).
pp. 60-63.
Abstract
The earth is defined as being round but in fact the
true shape of the earth is described by the term
Geoid which means the Polar regions are flat while
the Equatorial region bulges out. The spinning of
the earth develops a centrifugal force which forces
the mass to spread out while simultaneously
another counterforce, the centripetal force comes
into play. Both the forces work in a coordinated
manner. The centrifugal force throws out the mass,
thereby creating a space around the central part of
the earth. Consequently, the mass in Polar regions
tend to fill up this space or vacuum. This causes
the Polar regions to be flat. This is because the
rpm (rotational speed per minute) of spinning is
slower at the Polar regions when compared to the
Equatorial region.
Actions (login required)
 |
View Item |
