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14 Cards in this Set
- Front
- Back
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Comets |
composed of frozen gases, rocks and dust - have an ice existence |
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Origins of comets |
- The Kuiper Belt - The Oort Cloud |
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Kuiper belt |
- short period comets - orbit for less than 200 years |
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Oort Cloud |
- long period comets - orbit 200 years to 30 million years |
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comet tails |
- sun heat evaporates i’ve - dust and gases are sent into space - forming a glowing head and long tail |
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Asteroids |
- small rocky structures that have no air and no atmosphere -located in the asteroid belt |
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where is the asteroid belt |
lies between Mars and Jupiter |
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small asteroids |
10 m - known as Meteors |
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large asteroids |
100 km - planetoids |
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c type |
most common asteroids - carbon based |
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s type |
silicon based |
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m types |
metallic asteroids |
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asteroid ceres |
- largest asteroid in the asteroid belt - contains water -950 km diameter |
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asteroid vesta |
2nd largest asteroids 530 kn diameter |
