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How many miles around the poles?
The circumference of the earth at the equator is 40,075.16 kilometers or 24,901.55 miles.The shorter circumference of the earth over the poles is 40,007.86 kilometers or 24,859.73 miles.The difference is 67.3 kilometers or 41.82 miles.This shape is known as an ellipsoid or more properly, a geoid (earth-like).
What is the diameter of the earth in feet?
The distance around the Earth depends on the exact location but this answer presumes around the equator, this distance being termed the circumference. The circumference of the Earth is approximately 25000 miles. There are 5280 feet in each mile, and the conversion results in 132,000,000 feet. This is 132 million feet.
What country is in the middle of the earth?
No country is directly in the middle of the earth. The center of the earth is made up of molten iron and nickel about 6,400 kilometers beneath the Earth's surface.
What is the earth biggest element?
The most abundant element on (and in) earth is iron.
What is another name for Earth Rotation?
Another name for Earth rotation is diurnal motion or daily rotation.
Shape of earth geoid or spherical?
The Earth is best modeled as an oblate spheroid, meaning it is mostly spherical but slightly flattened at the poles and bulging at the equator. The geoid, on the other hand, represents the Earth's gravitational field and is irregular due to variations in density and topography.
Why is it not helpful to use the term geoid to describe the shape of the earth?
The geoid has an equipotential surface where the force of gravity is perpendicular everywhere. But the earth has an irregular mass distribution and the resultant anomalies, makes the term geoid not a suitable reference.
Why is the shape of the earth geoid?
The shape of the Earth is closer to a geoid rather than a perfect sphere due to variations in the density and composition of its interior. These irregularities have caused the planet to bulge at the equator and flatten at the poles, resulting in a shape that more closely resembles a geoid.
Why earth is called Geoid shape?
Ah, the Earth is called a geoid shape because it is not a perfect sphere, but rather slightly flattened at the poles and bulging at the equator. This shape is due to the Earth's rotation, gravitational forces, and uneven distribution of mass. Just like how we all have unique shapes and sizes, the Earth's geoid shape makes it special and beautiful in its own way.
What are earths most likely forms?
"Roundish" is the clear winner so far as I know.(The actual shape of Earth is not a sphere; it's a "geoid", but saying "Earth is a geoid" is pretty much a tautology, since it amounts to saying "Earth is Earth-shaped.")
What is an earth-shaped object called?
The technical name for the shape of the Earth is geoid. This is studied in the science of geodesy.
Why earth is in geiod shape?
Earth is approximately in a geoid shape due to its rotation, which creates a bulging effect around the equator. The distribution of mass and gravitational forces also contribute to shaping it as a geoid, where the shape represents an idealized global mean sea level.
What is called the true model of the Earth?
The true model of the earth would be called an oblate spheroid. The earth is close to spherical, but bulges a little around the middle (equator). There is also a term for the theoretical 'average earth' if you will, that is the best possible fit between mathematical model and the actual physical planet. It is called the geoid. Surface altitude is calculated for a given spot based not on the physical earth, but on the location of the theoretical geoid at that spot.
What is earth called as?
The shape of the earth, after the unevenness of the mountains and valleys have been removed, is geoid. This, rather unhelpful term means earth-shaped. The geoid represent the shape that would be attained by the earth's oceans in the absence of tides and currents; and which is them extended onto the continents. It is the baseline which identifies the mean sea level.A simpler term is an oblate sphere. These is a flattened sphere.Simplifying even more, the earth may be referred to as a sphere.
What are the theories explain the shape of earth?
The two main theories explaining the shape of the Earth are the geoid theory and the oblate spheroid theory. The geoid theory suggests that the Earth is an irregular shape due to variances in gravitational forces and surface features. The oblate spheroid theory posits that the Earth is mostly a slightly flattened sphere, bulging at the equator and flattened at the poles due to its rotation.
What parameters of the geoid do geodesists measure?
Some of the parameters of the geoid, which are measured by geodesists, are the semi-major axis, and the reciprocal of flattening.
What are the properties of geoid and ellipsoid in geodectic surveying?
Geoid is the surface of idealized oceans (mean sea level), extended under the continents: * It is equipotential surface: W(x,y,z)=W0 * It is continuous * Closed * And not analytical surface, that for: - It is not used as reference for position determination - It is used only as reference for heights.
