Which of the following statements is correct?Group of answer choicesThe Geoid matches the EllipsoidAn Ellipsoid matches Mean Sea LevelGeoid is sometimes above and sometimes below the earth's surfaceAn Ellipsoid is always above the earth's surfaceNext
Question
Which of the following statements is correct?Group of answer choicesThe Geoid matches the EllipsoidAn Ellipsoid matches Mean Sea LevelGeoid is sometimes above and sometimes below the earth's surfaceAn Ellipsoid is always above the earth's surfaceNext
Solution
The correct statement is: "Geoid is sometimes above and sometimes below the earth's surface".
Here's why:
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The Geoid does not match the Ellipsoid. The Geoid is a model of global mean sea level that is used to measure precise surface elevations, while the Ellipsoid is a mathematically defined surface that approximates the Earth's shape, which is not a perfect sphere.
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An Ellipsoid does not match Mean Sea Level. As mentioned above, the Ellipsoid is a mathematical approximation of the Earth's shape, while Mean Sea Level is an average level of the surface of the Earth's oceans.
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Geoid is sometimes above and sometimes
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