The Low Average Density of the Large, Outer Planets, Which

question 18

Multiple Choice

The low average density of the large, outer planets, which have high masses and hence high gravitational fields, is an indication of what fact about their interiors?

• A) The large, outer planets have hot, gaseous interiors, similar to the interiors of cool stars.
• B) The interiors of the large, outer planets are composed of water, methane, and ammonia.
• C) The large, outer planets are composed mainly of very light elements, such as hydrogen and helium.
• D) The interiors of the large, outer planets have not been condensed to liquid or solid form.

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