Changes to Land

Landforms Features on the surface of the earth such as mountains, hills, dunes, oceans and rivers

Delta A triangle shaped landform at the mouth of a river as it empties into another body of water

Canyon A deep gorge in the surface of Earth formed by the erosion of moving water and sand

Sand Dune Hills formed by the wind blowing sand

Mountain Very large rock formation with peak at top

Hill A large land formation of rocks, dirt, and grass that has rounded at the top

Valley The flat area between two mountains or hills

Glacier Slowly moving river of ice

Plain A large area of land that is flat with no mountains, hills, or valleys

Erupt To break open suddenly

Volcano A mixture of hot rocks, ash, and gases that blows through a crack in the Earth’s surface

Landslide The rapid downward slide of rocks and mud

Earthquake A sudden release of energy under the Earth's surface that makes the ground shake or crack

Channel the bed where a natural stream of water runs; the deeper part of a river or harbor; a narrow sea between two close landmasses.

Basin a hollow or depression in the earth’s surface, wholly or partly surrounded by higher land (such as a river basin).

Plateau a raised area of land that is relatively flat on top but is higher than the surrounding land.