| A | B |
|---|
| weathering | the breaking down of rock on the surface of the Earth, usually by the force of water, wind or ice |
| erosion | the movement of weathered particles by water, wind, or ice |
| deposition | the process by which materials that have been eroded are dropped in a new place |
| glacier | a huge piece of ice that slowly moves across the surface of the Earth and remains frozen during the entire year |
| earthquake | the shaking of the Earth's crust caused by large pieces of rock underneath the Earth's surface moving against each other |
| volcano | a mountain made from hardened lava, rocks, and ash that erupted from underneath the Earth's surface |
| landslide | occurs when gravity pulls down some of the land on the slope of a hill |
| delta | a large, flat area of land at the mouth of a river formed by the deposition of sediments |
| canyon | the high walls along a river and the river itself |
| sand dune | a hill of sand formed by the deposition of sand by the wind |
| landform | features on the surface of Earth such as mountains, hills, dunes, oceans, and rivers |
| beach erosion | the removal of beach materials into the sea or lakes by the action of waves, tides, or wind |
| waves | moving ridges of water on the surface of the oceans caused by wind |
| fault | a crack in the Earth's surface |
| magma | melted rock below Earth's surface |
| lava | magma that has flowed out onto the surface of the Earth |
