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Q: Why are gas giants so big and cold?
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Why are gas giants so cold?

Because of their distance from the sun


What so all the terrestrial planet have in common?

They are all dense and rocky. The gas giants are made of gas and are big. ps. pluto is not a plnet anymore!! ^_^


Why would the gas giants be made of gas when they are so cold?

The gas giants are composed of hydrogen and helium, which can remain in a gaseous state at extremely low temperatures, even lower than thous found in the atmospheres of the gas giants. In reality, though, most of the volume of the gas giants is not gas. Deep within the atmospheres of these planets the enormous pressure renders the hydrogen and helium into a supercritical state, which is characteristics between those of a liquid and a gas. Even deeper the hydrogen enters an exotic metal-like state. The interiors of the gas giants are very hot.


Do the gas giants have volcanoes?

The gas giants have no volcanoes; they are composed entirely or almost entirely of gas, so there is nothing to erupt. However, it should be noted that some of the satellites of the gas giants do have volcanoes.


Why have the Jovian planets retained their atmospheres?

Simply because the gas giants are so big that the force of gravity is sufficient to retain the light gases.


Why do all the gas giants have thick atmospheres?

gravity keeps the gas giants planets gases from escaping so they have thick atmosphere


How does the composition of earths atmosphere differ from the composition of the atmospheres of the gas giants planets?

The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere


How does the composition of Earths atmosphere different from the composition of the atmosphere of the gas giants planets?

The Gas Giants have a deep gas atmosphere and earth have a not so deep atmosphere


Why are gas giants hard to investigate?

The cores are so deep in the planets


Is uranus mostly made out of gas or rock?

It is one of the gas giants, so mostly gas.


How are rocky plants different then gas giants?

Please tell me you mean Planets not Plants, that is an odd image. Rocky Planets are made mostly of Rock ie solid stuff. Gas Giants are made mostly of Gas. Most gas giants are much bigger than the rocky planets. So far most of the extra solar planets are gas giants (they are bigger so easier to find)


Gas giants have poisonous atmosphere true or false?

Gas giants do not have atmosphere because if it did our solar system would not be like it is now. So the answer is false.