LAWS 2601 Midterm: FIRST PORTION TO KNOW FOR MIDTERM

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Conditions necessary for a large permanent ocean to exist are: The origin of the ocean is linked to: The origin of the solar system and the galaxies; Origin: solar system, earth, moon, hydrosphere, magnetic field. Hydrogen and helium remain gaseous but other materials can condense into solid seeds" for building protoplanets. Warm temperatures allow only metal/rock seeds" to condense in the inner solar system. Cold temperatures allow seeds" to contain abundant ice in the outer solar system. Larger ones attract others with their gravity, growing bigger still. Terrestrial planets are built from metal and rock. The seeds of gas giant planets grow large enough to attract hydrogen and helium gas, making them into giant, mostly gaseous planets: moons form in disks of dust and gas that surround the planets. Gas giant planets remain in the outer solar system leftovers" from the formation process become asteroids (metal/rock) and comets (mostly ice: earth. Young earth was formed by the accretion;

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