enough to keep us on it
iron and magnesium
Because of gravity.
Gravity is an entirely separate entity which is a consequence only of the mass of the earth itself. In fact, the atmosphere presses down because gravity is pulling on it.
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Geomagnetism is the study of the earths magnetic field. The structure of the magnetic field of the earth is far more complex than the structure of the gravity field. Tidal variations in magnetic field have greater magnitude and more complex frequency structure as compared to the magnitude and frequency structure of tidal variation in gravity feilds. Gravity is an inherent property of all objects on the earth surface but geomagnetism is not . The earths magnetic pull is much weaker than its gravitational pull. Geomagnetism is Dipolar while gravity is not.
The percentage of Earth's gravity on the surface of the Moon is about 16.5%.
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Earths gravity acts on everything from its center of gravity to everything else's center of gravity.
The sun gravity is stronger
The sun gravity is stronger
Both mercury and mars have a gravity which is around 38% of earths. Mercury's gravity is 37.8% of earths, Mars' gravity is 37.7% of earths.
the gravity on venus is about 90.4% of earths
The Sun's gravity is about 28 times stronger than Earth's gravity at the surface of the Earth. However, because the Sun is much farther away than Earth's own radius, its gravitational influence on Earth is significantly weaker compared to Earth's own gravitational pull.
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Gravity.
Mercury's gravity is approx 38%.
the earths moon helps sustsian the gravity on the earths oceancs keeping them in balance