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vocabchptthree
astronomy vocabulary
| Question | Answer |
|---|---|
| The average distance between the Earth and the Sun | Astronomical Unit |
| The small,dense, rocky planets of the inner solar system | Terrestrial planets |
| The counter-clockwise spin of a planet or moon as seen from above the planet's north pole | Prograde rotation |
| the clockwise spin of a planet or moon as seen from above the planet's north pole | Retrograde rotation |
| The large,gaseous planets of the outer solar system | Gas giants |
| A natural or artificial body that rovolves around a planet | Satellite |
| An event in which the shadow of one celestial body falls on another | Eclipse |
| A small body of ice, rock, and cosmic dust loosely packed together that gives off gas and dust in the form of a tail as it passes close to the sun | Comet |
| A small, rocky body that revolves around the sun | Asteroid |
| The region of the solar system most asteroids occupy; roughly between the orbits of Mars and Jupiter | Asteroid Belt |
| A very small, rocky body that revolves around the sun | Meteoroid |
| A meteoroid that reaches the Earth's surface without burning up completely | Meteorite |
| A streak of light caused when a meteoroid or comet dust burns up in the Earth's atmosphere | Meteor |