This document discusses various processes of erosion and deposition. It describes five main agents that cause erosion: gravity, glaciers, wind, running water, and ocean waves. Each agent breaks down and transports material, then deposits sediments in new locations to form landforms like moraines, drumlins, deltas, and beaches. Gravity causes rapid mass movement or slow creeping. Glaciers carry debris and leave piles of debris called moraines. Wind erodes loose material from deserts and fields, depositing loess and dunes. Running water is a major cause, forming canyons and depositing material in river deltas and flood plains. Ocean waves erode shorelines, depositing beaches, spits, and barrier

1. Erosion and Deposition

2. Breaking Down Processes
 Weathering
 The breaking down of the earth’s material by
natural processes.
 Erosion
 The process by which weathered rock and soil
particles are moved from place to place.
 Deposition
 The process by which weathered sediments are
laid down in a new location creating new
landforms.

3. 5 Agents of Erosion
 Gravity
 Glaciers
 Wind
 Surface Water / Running Water
 Ocean Shoreline / Ocean Waves

4. Gravity
 Pulls rock and soil down a slope
 Called Mass Movement
 Rapid
 Rockslides
 Mudflow
 Avalanche

6. Gravity
Slow
 Slump
 Creep

7. Glaciers
 Carry very large to very small debris
 Most powerful agent
 Deposits
 Form piles called moraines
 Drumlins – little mounds
 Glacial lakes
 Kettle lakes
 U-shaped valleys

8. Moraines

9. Drumlins
Glacial lakes

10. Kettle Lakes
U-shaped valleys

11. Glaciers

12. Glacial Erosion

13. Wind
 Removes loose material from the earth’s
surface.
 Amount of material carried depends on wind speed
 Most active in deserts, plowed fields, beaches
deserts
 Deposits by wind
 Loess- layer of fine silt or sand
 Dunes- mounds of sand

14. Loess

15. Dunes

16. Running Water
 MAJOR CAUSE OF EROSION
 When water moves it carries particle called the
load.
load

Speed of water determines the size of the load

Creates canyons and valleys
 River deposits
 Delta
 Oxbow lake
 Flood plains

17. River deltas

18. Oxbow Lakes

19. Flood Plains

20. Waves
 Constantly erode and shape the
shoreline.
 Formation
 Sea cliffs
 Sea stacks and caves

21. Sea Stacks

22. Sea Stacks & cliffs

23. Cape
Flattery,
Olympic
Peninsula
Sea
caves

24. Waves
Deposits
 Beaches
 Spits
 sand bars
 Barrier Islands

26. Barrier Islands

27. Spits &
Sandbars

28. Erosion by Brainpop