| A | B |
|---|
| planets orbit the sun at | different distances |
| astronomical unit (AU) | earth's average distance from the sun. |
| ellipse | a shape of orbit (oval) |
| inner solar system has rocky planets | mercury, venus, earth, mars, asteroids |
| mercury, venus, earth, and mars are... | terrestrial planets - has surface features. |
| outer solar system has gas giants | jupiter, saturn, uranus, neptune |
| comets | icy rocks that burn through the sky |
| asteroids | small solid rock bodies that orbit close to the sun |
| meteors | rocky particles that produce streaks of light |
| meteroite | rocky particles that reach earth's surface |
