1. Title of Notes: Erosion & Deposition pg. 29, 30, & 31 RS

2. Erosion video

3. EROSION
Erosion= movement of sediment by
ice, wind, or water

4. Erosion is a destructive force.
Erosion wears down Earth’s surface
gully
river valley

6. CAUSES of EROSION Ice (Glaciers)
Glaciers carry materials along as they move forward

7. ICE EROSION EFFECTS
ICE
a. “U” shaped Valley
b. Flat Plains

8. CAUSES of EROSION WIND carries
(blows) sediments and soil from one place to another

9. WIND EROSION EFFECTS WIND a.Reshaped surfaces b.Sand storms
c.Dust storms

10. EROSION EFFECTS

11. CAUSES of EROSION
Moving water in streams & rivers carries sediments along as it moves down stream.
The faster the water, the more and the heavier material it can carry

12. WATER EROSION EFFECTS
caves

13. WATER EROSION EFFECTS
Caves are formed when rock is chemically dissolved and carried away by groundwater or underground rivers leaving “holes” in the rock.

14. WATER EROSION EFFECTS sinkholes
Sinkholes form when the rock underneath the soil, is eroded away & the and above sinks because it is no longer supported
sinkholes

15. WATER EROSION EFFECTS River valleys & canyons
are formed when fast moving rivers erode the land over long periods of time.

16. EROSION EFFECTS
Floodplains are formed over time when a river or stream overflows its regular banks and erodes the land around it.

17. CAUSES of EROSION Gravity Causes water and glaciers to move downhill
particles (sediments, dust, soil, etc.) carried by water and wind to settle on bottom on stream or the ground

18. Deposition video

19. Deposition
Deposition= build up of land through the dropping off of sediments that are being carried by ice, wind, water or gravity

20. DEPOSITION NONLIVING CAUSES
ICE
Glaciers deposit sediments as they begin to melt (recede)

21. DEPOSITION EFFECTS
ICE
-moraines
-lakes
-hills

22. FORCES OF EROSION & DEPOSITION
WIND
When the wind slows down, the sediments are deposited
The heaviest
sediments are
dropped first

23. Deposition Effects
Wind
Sand dunes

24. DEPOSITION NONLIVING CAUSES
WATER
-When the water slows down, the heaviest sediments are deposited first
Older rivers have curves called meanders.

25. DEPOSITION EFFECTS
WATER
sandbar
delta
beach

26. DEPOSITION EFFECTS
FLOODPLAINS

27. DEPOSITION EFFECTS
WATER
stalagmites, & stalactites
(ground) (ceiling)

28. Constructive and Destructive Forces Review
Forces that tear down/wear away Earth’s surface
Examples:
Weathering
Erosion
Constructive
Forces that build up Earth’s surface
Example:
Deposition

29. Notebook activity
Draw a picture to represent wind, water, and ice erosion effects. Label each. Draw a picture to represent wind, water, and ice deposition effects. Label each