Uranus, Neptune, Pluto 10-1

Uranus, Neptune, Pluto 10-1 - Uranus, Neptune, and Pluto...

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Uranus, Neptune, and Pluto Mars o Orange due to iron oxides (rust) o Mars’ polar ice caps grow and shrink with the seasons o Very windy place o Spacecraft saw craters, volcanoes (no longer active), canyons o Used to be plate tectonics—lost its heat inside and thus stopped plate tectonics—interior no longer molten like Earth o Generally cold because it doesn’t have much atmosphere o Evidence of Water on Mars: Riverbeds, if you look at conditions it would have been water, not methane Impact Craters- tear drop structures caused by presence of water Very narrow channels o Most of the water probably evaporated away as the atmosphere got thinner and thinner Inverse green house effect Loss of carbon dioxide leads to less greenhouse heating, which leads to less atmosphere and continues cyclically o A lot of water still trapped in the polar caps and the permafrost o Estimated that at one time Mars had enough water to make an ocean a couple of meters deep o Spirit and Opportunity found “blueberries” – form in the presence of water
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Uranus, Neptune, Pluto 10-1 - Uranus, Neptune, and Pluto...

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