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Science test
| Question | Answer |
|---|---|
| orbit | The curved path a celestial object or spacecraft takes around another body due to gravity |
| revolve | to move in a circular path around a central axis or point, to rotate, or to recur in cycles. |
| rotate | to turn or cause something to turn around a central point or axis |
| axis | an imaginary or real straight line about which an object rotates |
| Wanning | the illuminated portion of the Moon is decreasing |
| Waxing | the phase of the moon when the illuminated portion visible from Earth is increasing |
| Planet | a celestial body that orbits the Sun, has sufficient mass for its gravity to form a nearly round shape |
| Asteroid belt | Big rocks that are in between Mars and Jupiter |
| Gravity | the universal fundamental force of attraction acting between all matter with mass or energy |
| Accretion | the process where small particles, gas, and dust collect and stick together due to gravity |
| Galaxy | a massive, gravitationally bound system consisting of stars, stellar remnants, interstellar gas, dust, and dark matter. |
| Universe | the totality of all space, time, matter, and energy that exists |
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