1. Bellringer: How is ROCK broken up and changed?
By Weathering at earth’s surface
How is SOIL moved?
By Erosion: the physical removal and transport of rock material by water, wind or ice.

2. How soil is eroded? Rain loosens soil
Flowing water across the surface carries away the dislodged soil particles (sheet erosion)

3. Rates of erosion depend on
Soil characteristics
Climate: wet, dry windy
Slope: steep
Type and amount of vegetation / trees
Human activity: farming, logging, construction

4. Transporting loose soil by WIND What would have prevented this??

5. North American Prairie
Deep roots held the soil

6. What are some measures that can be done to prevent or slow the rate of erosion?
Plant ‘cover crops’ (hay)
Plant trees as windbreak and roots hold soil .
Contour plowing for crops

7. How can we slow the rate of erosion?
Terrace planting of crops
Stone walls

8. How can we slow the rate of erosion?
Rip rap
bioswale

9. Methods to prevent mass wasting erosion
Examples of erosion control methods include:
buffer strip
crop rotation
conservation tillage
contour plowing
cover crops
fiber rolls
gabions
level spreaders
mulching
perennial crops
reforestation
riprap
strip farming
sand fence
waterway (bioswale)
terracing
wattle (construction)
windbreaks