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What is the difference between a star, a planet and a moon?

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
        Help!  

Question
Answer
What do planets revolve around?   Stars  
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What do moons revolve around?   Planets  
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Which of the following does emit light? Moon, Star, Planet, Satellite   Star  
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Which of the following does NOT emit light? Star, Sun, Betelgeuse, Moon   Moon  
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Objects with a larger ________________ have more gravity.   Mass  
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Which of the following have the greatest mass? Moon, Star, Planet   Star  
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Which of the following have the most gravity? Moon, Star, Planet   Star  
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When we see planets like Jupiter in the night sky they look like stars because they _____________ light from the Sun.   Reflect  
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The gravity of the Earth pulls the Moon in, but it doesn't crash into our planet because it has just the right amount of _______________ to continue falling in a circle around it.   Speed  
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The _____________ of the Sun pulls the Earth in, but we don't crash into the Sun because we are moving at just the right speed to continue falling in a circle around it.   Gravity  
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We see the Moon at night because it _______________ light.   Reflects  
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We see stars at night because they _______________ light.   Emit  
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Created by: roosscience
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