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ASTRONOMY
STUDY GUIDE
| Question | Answer |
|---|---|
| Planet | A large body in space that orbits the Sun and does not produce light. |
| Pluto | Once considered to be a planet in our solar system. |
| Mars | Known as the “red planet” - 4th closest to the Sun. |
| Mercury | Takes the LEAST amount of time to orbit the Sun. |
| Venus | Second planet from the sun. |
| Rotation | The spinning of the Earth. |
| Revolution | The movement of Earth around the Sun. |
| Orbit | Path a object follows as it revolves around another object. |
| Highlands | Mountains on the Moon’s surface. |
| Marias | Flat areas on the Moon’s surface. |
| Craters | Large, round impressions on the Moon’s surface caused by impacts. |
| Sun | The only star in our solar system. |
| Polaris | The North Star |
| Asteroid Belt | Found between Mars and Jupiter . |
| Asteroids | Rocky objects revolving around the Earth and Sun that are too small to be classified as planets |
| Meteorite | A piece of meteoroid that lands on Earth after passing through the atmosphere |
| Meteoroid | Small rocks in space |
| Winter | The hemisphere tilted away from the Sun & receives LESS direct rays, has shorter days & a cooler season |
| Equinox | When all of Earth has 12 hours of day & 12 of night |
| Solstice | 2 days a year when the sun is directly over the equator |