| A | B |
| accretion | the size of the external earth surface |
| aquifer | underground streams |
| continental crust | crust on land |
| crust | the surface of the earth |
| earthquake | shaking of the ground |
| equinox | the sun is directly over the equater |
| evolution | is the process of growth, development, and change |
| ground water | water beneath the earth |
| landform | shapes on the earths surface |
| mantle | located between the core and the crust |
| outer space | boundless area beyond the earth |
| oceanic crust | crust found under water |
| planetary winds | winds that affect the whole planet |
| revolution | movement of the earth and space around the sun |
| rotation | the turnning of the earth on it's axis |