2. The Process of Change Erosion and Its Effects http://www.geo-images.com/atlas

3. By 6th Grade Student Ms. Krieter’s Class Room M2 August 9, 2002 http://www.geo-images.com/atlas

4. Definition of Erosion Erosion is the process whereby the soil and the rocky materials of the Earth's crust are loosened, dissolved, or worn away, and then moved from one place to another. www.cnn.com/2000/NATURE/ 06/27/fema.erosion.02/ http://www.geo-images.com/atlas

5. Agents of Erosion Running Water Wind Glaciers Gravity

6. Running Water Running water can carve out dramatic valleys and canyons. The picture shows a V-shaped valley carved by a river. http://www.geo-images.com/atlas

7. Running Water Running water can carve out dramatic valleys and canyons. The picture shows a slot canyon created by extremely fast moving water. This place is very dangerous due to flash floods. http://www.geo-images.com/atlas

8. Running Water Sediment is picked up by the water and taken to a lower point. This process slowly carves out the land. http://dgl.microsoft.com/

9. Running Water Deltas are formed where the sediment is dropped as the water slows down at the sea. The picture shows the Nile Delta in Egypt. This is where the Nile flows into the Mediterranean Sea. http://www.nasm.si.edu/ceps/rpif/ssp/STS076_719_053.gif

10. Agents of Erosion Running Water Wind Glaciers Gravity

11. Wind Wind picks up small particles and moves them to another place. The picture shows sand dunes created by wind erosion.

12. Wind Wind picks up small particles and moves them to another place. The video shows a dust storm - erosion in progress.

13. Agents of Erosion Running Water Wind Glaciers Gravity

14. Glaciers Glaciers pick up large sediment and very slowly carve out large U-shaped valleys. Yosemite Valley in California was created by a glacier.

15. Glaciers Glaciers pick up large sediment and very slowly carve out large U-shaped valleys. Half Dome in Yosemite Valley was sliced in half by a glacier.

16. Agents of Erosion Running Water Wind Glaciers Gravity

17. Gravity causes materials to go downhill. This movement can be slow or quick. The picture shows cleaving; a piece of rock broke off and fell to the ground.

18. Gravity Four types of erosion caused by gravity.

19. Gravity http://www.uwsp.edu/geo/faculty/ritter/images/lithosphere/mass_was ting_erosion/landslide_La_Conchita_CA_USGS_slide21_small.jpg Slump http://www.aqd.nps.gov/grd/parks/tica/tica_virtual_fieldtrip/ Stop3.htm Rockslide

20. Comprehension Questions 1. What is erosion? 2. Give an example of erosion and what caused it. 3. What agent of erosion caused what you see in the picture? http://www.geo-images.com/atlas

21. Sources http://www.geo-images.com/erosion.jpg http://www.geo-images.com/atlas http://www.school.discovery.com/clipart/ http://www.nasm.si.edu/ceps/rpif/ssp/STS076_719_053.gif http://dgl.microsoft.com/ http://www.uwsp.edu/geo/faculty/ritter/images/lithosphere/mass_wasting_erosion/landslide_La_Conchita_CA_US GS_slide21_small.jpg http://www.aqd.nps.gov/grd/parks/tica/tica_virtual_fieldtrip/Stop3.htm www.cnn.com/2000/NATURE/ 06/27/fema.erosion.02/