1. What moved each of these sediments? How do you know?b) a) c) d)

2. Aim: How do weathered fragments get carried away?
Topic: Unit 4
Main Idea: Erosion

3. How did this boulder end up in the middle of the woods?

5. The process where weathered fragments are carried away.
1) Define erosion:
The process where weathered fragments are carried away.

6. 2) Agents of Erosion Abrasion by sand Carries small particles
Features
Wind
Abrasion by
sand
Carries small
particles
Pitted surface

8. outlier
arch

9. Faster flow=more power
                                           
Features
Water
Faster flow=more power
#1 agent of erosion
Rounded particles
“V”-shaped valley
Fastest in the middle
Just below the surface

10. The Grand Canyon and the Colorado River

11. Animals

12. Striations (scratches
Features
Glaciers
“U” shaped valley
“rivers of ice”
Striations (scratches
in bedrock)
Erratics (boulders
in odd places)

13. talus Driving force of all agents Jagged edges Features Gravity
Features
Gravity
Driving force of all agents
Jagged edges
Mass movement: avalanche, mudslide,
landslide, creep (very slow)
talus

14. What moved each of these sediments? How do you know?b) a) c) d)

25. How can you tell if sediments were eroded by a river?
Exit Card
How can you tell if sediments were eroded by a river?
How can you tell if sediments were carried by a glacier?