| A | B |
|---|
| Absolute Locatioin | Exact spot where a place is found. |
| Atmosphere | Layer of oxygen and other gases that surrounds Earth. |
| Axis | Imaginary line that passes through the center of Earth from the North Pole to the South Pole. |
| Century | A period of 100 years. |
| Decade | A period of 10 years. |
| Environment | Natural surroundings of people. |
| Geography | Study of the earth and its people. |
| Identical | Exactly the same. |
| Leap Year | Year with 366 days, which happens every four years. |
| Millennium | A period of 1,000 years. |
| Orbit | Specific path each planet follows around the sun. |
| Physical | Related to natural science. |
| Relative Location | Description of where a place is in relation to the features around it. |
| Reverse | Opposite. |
| Revolution | One complete circuit around the sun. |
| Rotate | To spin on an axis. |
| Significant | Important. |
| Solar System | Planets, along with their moons, asteroids, and other bodies, and the sun. |
| Theme | Topic. |
| Tropics | Area between the Tropic of Cancer and the Tropic of Capricorn, with generally warm temperatures. |
