1. Science: Constructive and Destructive Forces Vocabulary

2. landforms
A natural land shape or feature, such as mountains, plains, or valleys.
Examples:
Mountains, hills, valleys, plains, canyon

3. sand dune
A hill of sand, made and shaped by wind

4. delta
An area of new land at the mouth of a river, formed from sediments carried by the river

5. fault
A break in the earth’s crust

6. volcano
A mountain that forms as molten rock flows through a crack onto the Earth’s surface

7. magma lava Melted, or molten, rock beneath Earth’s surface
Molten rock that reaches Earth’s surface

8. earthquake
A movement of the ground caused by a sudden release of energy in the Earth’s crust.

9. seismograph
A machine that records movement in the Earth’s crust

10. deposition
Dropping, or depositing, sediment into a new location

11. erosion
The process of moving sediment by wind, moving water, or ice

12. weathering
The process of wearing away ROCKS by natural means

13. dams
Dams stop the flow of a river

14. levee
A wall of earth or concrete built along the banks of a waterway