The speed that a planet rotates on its axis would affect the length of its____. A ____is a natural satellite that revolves around a planet. ____ has a retrograde rotation which means it spins the opposite the direction of the other planets.. ____ is the closet planet to the sun and has almost no atmosphere. ____ is the planet with a thick atmosphere of carbon dioxide that traps infrared light and keeps the surface the hottest of all the planets. The amount of time that a planet takes to make one complete revolution around the sun is known as the length of its ____. There are only two bodies in the solar system known to have liquid water. One is Europa, a moon of Jupiter and the other is ____. Scientists think that ____ once had liquid water on its surface because we can see evidence of running water that formed canyons and other erosion. Venus is the hottest planet because its atmosphere is made of ____ gas that traps heat and causes a run-away greenhouse effect. Mercury is the planet closest to the sun. It has the greatest difference between its day and night temperatures. This difference is call the ____. Planets closer to the sun have a shorter ____. This is the time it takes to travel around the sun. Earth's atmosphere keeps the surface warm enough for water to exist as a ____. This is one of the main reasons Earth can support life. ____ is a red color because its soil has iron in it that turns a rusty color when exposed to oxygen and water vapor in the atmosphere. ____ has one moon. Because Mercury and Venus have no moons, they can also have no ____.

Terrestrial Planets Vocabulary

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