| A | B |
|---|
| Weathering | Mechanical or Chemical destructive weather forces that break down larger rocks into smaller pieces |
| Erosion | The movement of weathered rock from one place to another |
| Fault | A crack in the rock of the Earth’s crust. |
| Crust | The outer layer of the Earth. |
| Lava | Magma that reaches the Earth’s Surface. |
| Volcano | An opening in the Earth’s crust through which molten lava, ash and gases are ejected. |
| Earthquake | A sudden movement of the earth’s crust caused by the release of stress accumulated along faults or by volcanic activity |
| Deposition | The dropping of sediment or particles by water, wind or ice |
| Sediment | Mineral or organic matter deposited by water, air or ice. |
| Landform | A feature of a planet’s surface, such as an ocean, continent, mountain, waterfall, peninsula, swamp of valley. |
| Seismograph | A device that can record the vibrations in the earth. |
| Delta | A deposit of sediment that builds up at a river’s mouth. |
| Flood | An overflowing of water onto land that is normally dry; a sudden great volume of water usually caused by heavy rain. |
| Constructive Force | The building up of land or the creation of land forms. |
| Destructive Force | The breaking down or the wearing away of land and landforms. |
| Dam | A structure built across a river to control its flow. |
| Levee | A small ridge or raised area of land used to prevent a body of water from overflowing. |
| Storm Drain | A system of drains that present flooding during heavy rainstorms |
| Core | Earth’s innermost structure. |
| Mantle | Thick layer of Earth’s structure just below the earth’s crust. |
