| A | B |
|---|
| Solar System | 9 planets, sun and other objects |
| Planet | Spheres or ball like objects |
| satellite | body that orbits a larger body |
| revolution | circular orbit around the sun |
| rotation | one complete spin of earth on its axis |
| tropics | low-latitude areas that are warm |
| polar region | high latitude areas that are cold |
| soltice | earth's poles point at their greatest angle toward or away from the sun |
| tropic of capricorn | the suns most direct energy strikes earth |
| Antarctic circle | area that is south of this line does not have light |
| artic circle | areathat is north of this line does not have light |
| tropic of cancer | place where the sun's rays hit the most |
| equinox | earth's poles are not pointed toward or away from the sun |
| earth system | interactions of elements on and around our planet |
| atmosphere | layer of gases that surround earth |
| lithosphere | surface of the planet that forms the continents and the ocean floor |
| hydrosphere | all the water on the planet |
| biosphere | part of earth in which all of the plant and animal life exists. |
