Earth & Solar System

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Last updated 8:34 PM on 8/25/26
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8 Terms

1
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What is a geocentric model?

A model with Earth at the center.

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What is a heliocentric model?

A model with the Sun at the center.

3
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What does “geo” mean?

Earth

4
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What does “helio” mean?

Sun

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Who is associated with the heliocentric model?

Nicolaus Copernicus.

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What did Galileo contribute?

Telescope observations that provided evidence against the geocentric model.

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How did Earth form?

Material from the early solar system came together under gravity, forming the young Earth.

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What happened to early Earth as it developed?

 It became hot, materials separated into layers, and the surface eventually cooled.