The oblate spheroid, or oblate ellipsoid
, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis. It is the regular geometric shape that most nearly approximates the shape of the Earth.
What is the exact shape of the earth Class 9?
The shape of the earth is spherical that is slightly bulging at the Equatorial region and a bit flattened at the North Pole and South Pole. Actually, the shape of the earth is
an oblate spheroid
, which appears to be spherical around the center region, though quite flat on two ends.
What is the exact shape of the earth answer?
The oblate spheroid, or oblate ellipsoid
, is an ellipsoid of revolution obtained by rotating an ellipse about its shorter axis. It is the regular geometric shape that most nearly approximates the shape of the Earth.
What is the exact shape and size of the Earth?
However, from pole to pole — the meridional circumference — Earth is only 24,860 miles (40,008 km) around. Our planet’s shape, caused by the flattening at the poles, is called an
oblate spheroid
. Those numbers make Earth just slightly bigger than Venus, whose equatorial radius is about 3,761 miles (6,052 km).
What are the three shapes of the Earth?
- The geoid.
- Sphere.
- The equator.
What causes the Earth’s Oblateness?
This is the result of
the hydrostatic balance between the dominant gravitational force
, which wants to pull the Earth into a spherically symmetric configuration, and the centrifugal force due to Earth’s rotation, which wants to expel mass away from the rotating axis but in the end only manages to modify the Earth into …
What is the shape of the Earth Class 2?
The shape of the Earth is
geoid
.
What is the shape of the Earth what caused its shape?
Even though our planet is a sphere, it is not a perfect sphere. Because of
the force caused when Earth rotates, the North and South Poles are slightly flat
. Earth’s rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round.
What is the Earth’s mean temperature?
The mean temperature of the earth is
17 degrees Celsius
. This temperature is ideal for life to exist.
How did Earth get its name?
All of the planets, except for Earth,
were named after Greek and Roman gods and godesses
. The name Earth is an English/German name which simply means the ground. It comes from the Old English words ‘eor(th)e’ and ‘ertha’.
Who determines the shape of the Earth?
Actual detailed observations of the earth’s shape were first undertaken in the 18th century by people who were profoundly influenced by the predictions of the Englishman,
Sir Isaac Newton
; Newton had reasoned that the earth’s rotation must make it form a squashed sphere—with its polar diameter shorter than its …
How did Earth get its shape and size?
Earth’s Shape
The equatorial bulge at Earth’s equator is measured at 26.5 miles (42.72 km) and is caused by
the planet’s rotation and gravity
. Gravity itself causes planets and other celestial bodies to contract and form a sphere. … This is the force that causes objects to move outward away from the center of gravity.
Is the Earth shaped like an egg?
New photos taken from Voyager 2 show that
planet Earth is oval in shape
, resembling an egg, and not spherical as originally thought. … From this distance, Earth appears spherical, as only one portion of the Earth’s surface is visible at a time.”
Is Earth a geoid shape?
A much more complex model of the Earth is the geoid, used to approximate mean sea level. …
The Earth’s shape is nearly spherical
, with a radius of about 3,963 miles (6,378 km), and its surface is very irregular.
What is true shape of the Earth Class 6?
(a) The true shape of the Earth is
geoid-earth like shape
. In other words, it is orange shaped.
What does oblateness mean?
(ɒbˈleɪtnəs) noun.
the state of having an oblate shape
.
The Earth
is 21 kilometres, or 0.3 per cent, wider from east to west than from north to south.
