| A | B |
|---|
| Canyon | A deep, narrow valley with steep sides |
| Landform | A natural feature of Earth's surface |
| Delta | Sediment that builds up to form a flat piece of land |
| Sand Dune | A mound of sand |
| Abrasion | The process of scraping or wearing away |
| Weathering | Breaking up rocks by wind or water |
| Erosion | The movement of weathered rocks by moving wind or water |
| Renewable Resource | CAN be replaced in a short amount of time |
| NON-renewable resource | CAN NOT be replaced in a short amount of time |
| Solar | Means SUN |
| Hydroelectric energy | Energy of moving water used to make electricity |
| Geothermal energy | Heat from inside the Earth |
| Biofuels | A fuel made from living things |
