1. What do you see in this picture?
Why do you think the land looks the way it does?
Do you think it always looked like this?

2. What is Erosion?
Erosion is the process by which weathered material is removed and carried from one place to another.

3. What is Deposition?
Deposition is the process by which material carried by erosion is dropped in new places.

4. What are the 5 Agents of Erosion?
Running Water
Glaciers
Wind
Waves
gravity

5. How does running water cause erosion?
Rivers, streams and runoffs are examples of running water. Runoff is water from rain or snow that flows on Earth’s surface.

6. What landforms does running water create?
A delta is a triangular deposit of sediment located at the mouth of a river. A river creates a delta by laying down sediment or rock debris such as gravel, sand, silt, and clay that it has picked up and carried along its course.

7. Running water also creates valleys and floodplains?

8. How do waves cause erosion?
Ocean waves cause erosion by causing rock pieces to grind against another. This grinding force is called abrasion. It wears down rock particles until they become sand. The sand is then carried away by the waves.

9. What landforms do ocean waves create? (beaches, and sand bars)

10. Waves also cause sea arches and sea stacks.

11. How do glaciers cause erosion?
Frozen into a glacier are large rocks and sediments. As a glacier moves, these materials are carried to new places. Loose material deposited by a glacier is called till.

12. What land forms do glaciers create?
Moraine
Drumlin
Kettle Lake

13. How does wind cause erosion?
Wind has energy. Wind can move loose materials such as sand and dust particles. The removal of loose material from the Earth’s surface caused by wind is called deflation.

14. Winds also cause sand dunes.

15. How does gravity cause erosion?
The downward pull of gravity can cause materials to move from areas of high elevation to areas of low elevation. Gravity forcers glaciers to move downward and rivers to flow towards the ocean.
Mass erosion is the downward movement of materials.

16. Effects of Gravity
Mudslides
Creep

17. Try these questions: What is erosion? What is deposition?
What are the 5 agents of erosion?
How does gravity cause erosion?
How does wind cause erosion?