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Earth and Its Moon Terms

Earth and Its Moon Terms - Earth and It's Moon Terms 1...

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Earth and It’s Moon- Terms 1. Surface Gravity - The acceleration due to gravity at the surface of a star or planet. 2. Escape Speed - The speed necessary for one object to escape the gravitational pull of another. Anything that moves away from a gravitating body with more than the escape speed will never return. 3. Mantle - Layer of Earth just interior of the crust. 4. Crust - Layer of Earth which contains the solid continents and the seafloor. 5. Hydrosphere - Layer of earth that contains the liquid oceans and accounts for roughly 70 percent of earth’s total surface area. 6. Atmosphere - Layer of gas confined close to a planet’s surface by the force of gravity. 7. Core - The central region of Earth, surrounded by the mantle. The central region of any planet or star. 8. Magnetosphere - A zone of charged particles trapped by a planets magnetic field, lying above the atmosphere. 9. Tides - Rising and falling motion of terrestrial bodies of water, exhibiting daily, monthly, and yearly cycles. Ocean tides on earth are caused by the competing
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