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Solar System Notes
---- Closest to the sun ---- Smallest of the inner planets ---- Temperatures reach up to 1,380 F ---- Has low gravity, therefore there is no atmosphere ---- Orbits the sun once every 88 days ---- Surface is devoid of basalt - a hard, dense type of volcanic rock that has a glassy appearance ---- High density which implies that there is a large iron or nickel-ore core ---- Fun/Interesting Fact* Mercury's perihelion (the time at which the planet is the closest distance from the sun) advances 43 seconds of arc per century. ---- Second planet that is closest to the sun ---- Earth's twin--has the same density, mass, diameter and rock composition ---- High surface temperatures reaching near 900 F ---- Surface features: low-lying plains, mountain ranges, volcanoes, and rift systems. ---- Largest highland region is about the size of Africa ---- Rotates on its axis in a retrograde "backwards" direction ---- Completes one trip around the sun in 224.7 Earth- days ---- 98% of the atmosphere is made up of carbon dioxide ---- Fun/Interesting Fact* Venus has hot spots, formed from deep in the planet's interior, that are similar to the ones that made the Hawaiian Islands ---- Third planet from the sun ---- Distance from the sun 92,956,000 miles ---- Has only one orbiting companion-the Moon ---- Largest of the inner planets ---- Appears as a blue sphere from outer space, due to the water ---- Only place, that we know of, that has life on it ---- Made up of: Mantle: Composed of compounds of iron, magnesium, silicon, and oxygen Outer Core: sodium, potassium, oxygen, silicon and aluminum ----Fun/Interesting Fact* Earth's crust has a isostasy, (a condition of balance that exists between different portions of Earth's crust), which means the lighter rocks of the crust float on the heavier, plastic rocks of the mantle and either rise higher or sink lower, depending on the density and vo... Please login to view comments from other users.
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