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Ch.20 Vocab
solar system
| Question | Answer |
|---|---|
| a large cloud of gas and dust in interstella space; a reigon where stars are born or they explode at the end of their lives | nebula |
| a cloud of dust and gas that formed our solar system | solar nebula |
| the combination of the nuclei of small atoms to form a larger nucleus | nuclear fusion |
| a dark area of the photospere of the sun that is cooler than the surrounding areas and that has a strong magnetic field | sunspot |
| the spin of a body on its axis | rotation |
| the path that a body follows as it travles around another body in space | orbit |
| the motion of a body that travels around another body in space; one complete trip around an orbit | revolution |