| A | B |
| oceanic crust | crust found under the ocean |
| mantle | part between the core and the crust |
| land form | shapes on the earth's surface |
| earth science | involves the earth and the area around it |
| accretion | natural process of gradually increasing the size of the surface |
| sea level | the point where land water meet |
| universe | everything that exists |
| wind | air moving across the earth's surface |
| crust | surface of the earth |
| continental crust | crust on land |
| ozone layer | filters out harmful ultraviolet rays |
| solstice | the tilting of the earth's axis |
| aquifer | an underground stream or pond |
| continental drift | seperation of the earth's land masses |
| ground water | water on the ground |