Science vocab 3
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10 terms
Terms | Definitions |
|---|---|
 comet | a mass of rock, dust, ice, dust and gas traveling around the sun, usually in a highly eccentric orbit. |
| asteroid | a sold, rocklike mass that revolves around the sun, most found between mars and jupiter. |
| meteoroid | a rocky or icy fragment that travels through space. |
| meteor | the light made by a meteoroid as it passes through Eartrh's atmosphere. |
| meteorite | the parts of a large meteoroid that survives its trip through the atmosphere and hit Earth's surface |
| meteor shower | large number of meteors entering and burning up in the atmosphere, happens when the Earths passes through a debris field. |
| Geocentric | a model of the solar system with Earth in the center. |
| heliocentric | A model of the solar system with the sun in the center |
| retrograde motion | a periodic backward or westward loop made by a planet in front of the background of contellations. |
| gravitation | the force of attraction between any two objects with mass |
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