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earth and space
lesson 1 and 2
Question | Answer |
---|---|
satellite | is a body that orbits a planet |
star | a giant ball of hot gas, mainly composed of hydrogen and helium |
comet | is a cold mixture of dust and ice that gives up a long trail of light as it approaches |
planet | is an object that orbits the sun, is large enough to have become rounded by its own gravity |
constellation | is a pattern or group of stars that people imagined to represent a figure, animal or object |
revolution | is the movement of one object around another. revolution of earth around the sun is called a year |