| A | B |
| Abrasion | The process of wearing down by friction or rubbing against each other - usually along a stream |
| Ice Wedging | Freezing Water forces rocks apart. |
| Plant Root Growth | Roots of plants crack open rocks |
| Exfoliation | The process when sheets of rocks gradually break off |
| Mechanical Weathering | The breakup of rocks by physical forces |
| Chemical Weathering | The breakup of rocks by chemical reactions that change the rocks makeup |
| Evaporation | Water cycle process which changes from a liquid to a gas |
| Condensation | Water cycle process when gas changes to a liquid. |
| Precipitation | Any type of liquid or solid water that falls to Earth's surface |
| Fossil Fuels | An energy source formed from the remains of dead plants and animals. |
| Renewable Resource | A natural resource that is replaced in nature at about the same rate that it is used. |
| Non Renewable Resource | A natural resource that exists in a fixed amount |
| Independent Variable | In an experiment the variable that gets changed. |
| Dependent Variable | In an experiment the variable that gets measured. |
| Erosion | Process when sediment is picked up an moved to another place. |
| Rusting | Oxygen, Water and Iron form to cause this. |