Assignment 3 - Md. Munjurul Islam A00281421 AST 1000.1B...

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Md. Munjurul Islam A00281421 AST 1000.1B Explain the importance of mass in the formation and current appearance of the terrestrial planets. Your answer should address the interiors, surfaces and atmospheres. The four innermost planets in our solar system are Mercury, Venus, Earth and Mars, collectively known as the terrestrial planets. They are called terrestrial because they have a compact, rocky surface like the Earth's. The planets, Venus, Earth, and Mars have significant atmospheres while Mercury has almost none. All terrestrial planets are subject to impacts, tectonism, volcanism, and gradation. The make-up of planet interiors is dominated by the physics of materials under high temperatures and pressures . Temperature is also proportional to the total mass of the planet. Large worlds cool slower, have thinner crusts. High cooling rates also determine the interior structure. Slow cooling rates imply planets that still have warm interiors now. Warmer interiors imply more diversified structure. As one goes deeper into a planet the temperature and pressures go up.   Solids become semi-solid, plastic-like materials. With higher temperatures and pressures,
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This note was uploaded on 10/19/2011 for the course ASTRONOMY 1001 taught by Professor Barry during the Spring '11 term at Dalhousie.

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Assignment 3 - Md. Munjurul Islam A00281421 AST 1000.1B...

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