| A | B |
| glacier | any large mass of ice thatm oves slowly over the land |
| weathering | the breakdown of rock into smaller pieces or particles from the effects of wind, water, and/or ice |
| canyon | a deep gorge in the surface of the Earth formed by moving water |
| earthquake | a sudden release of energy under Earth's surface that makes the ground shake or crack |
| erosion | the movement of weathered material on Earth's surface by wind, water, or ice |
| deposition | when sediments are added to a landform |
| volcano | a vent in the Earth's crust through which lava, ash, and gases escape to the Earth's surface |
| landform | features on the surface of Earth, such as mountains, hills, dunes, oceans, and rivers |
| sand dune | hills formed by the wind blowing sand; an example of deposition |
| iceberg | part of a glacier that has broken off and is floating in sea water |
| delta | a triangular shaped landform at the mouth of a river, as it empties into another body of water |