Vocabulary – define each word

orbit

asteroid

solarsystem

gravity

revolve

atmosphere

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1. Who was the first man?

2. When?

3. Which mission?

4. Quote from the moon?

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1. What is the sun made of? 2. What surrounds the sun and how far does it extend? 3. How many earths can fitinside the sun? 4. How hot is the sun on thesurface? Inner core?

1. What are comets? 2. How are comet’s tailsformed? 3. How long can a comet’s tail be? 4. What gives light to the comets?

1. Saturn is mostly made of what gases?

2. What makes up the rings of Saturn?

3. Saturn has more of what than any other planet?

a.

b.

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1. What makes it its blue-green color?

2. Why is Uranus so different from the other planets?

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1. Name Pluto’s moons –

2. How cold is Pluto?

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