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Planet Interior3 - Planet Interiors Terrestrial planet...

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Planet Interiors . Terrestrial planet interiors are composed of three basic parts: a dense, metallic core , a lower density solid mantle surrounding the core, and a solid outer shell called the crust . Jovian planets have a core and a fluid mantle that merges smoothly into their atmospheres. I have already discussed several observations and techniques you can use to get initial clues of what a planet's interior is like. I will summarize them and then discuss ways to increase the accuracy of those rough initial models. Methods and observations already mentioned are: 1. The planets have flattened spherical shapes from the action of gravity and the centrifugal effect of their rotation. In the Planet Properties table (appears in a new window) the amount of the rotational flattening is the oblateness. The amount of flattening also depends on the fluidity or elasticity of the interior's material. 2. Compute the overall average density of the planet.
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