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Definition
| A sun ( star ) and everything within reach of its gravity |
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Definition
| The sun, planets, moon, meteor, comet, asteroid & asteroid belt. |
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| A big system of stars. ( ex: Andromeda, Milky Way ) |
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| Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. |
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| dwarf planets ( name 2 or 3 ) |
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| An imaginary line that passes through Earth's center, and North & South poles. |
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| what is the axis tilted towards? |
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Definition
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| two ways Earth moves through space |
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Definition
| Rotation, and Revolution. |
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Definition
| spinning of Earth on its axis |
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| what causes day and night? |
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Definition
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| how long does it take for Earth to rotate? |
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Definition
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Definition
| movement of one object around another. ( ex: earth around the sun ) |
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Definition
| 365 1/4 days. one complete revolution of Earth around the sun. |
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Definition
| path of an object as it revolves around another object in space. |
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| what shape is Earth's orbit? |
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Definition
| elongated circle or elipse. |
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Term
| how did the solar system form? ( 3 steps ) |
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Definition
| 1) A cloud of gas and dust formed a spinning disk. 2) Gas in center collapsed to form the sun. 3) Leftover gas and dust formed planets. |
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