1. How does water change Earth’s surface?

2. 11/30/18
How does water change Earth’s surface? 15

6. Your job is to take notes from the PowerPoint.

7. Deposition in Water The current slows down.
Heavy minerals (such as gold) are deposited in water.
This is called a placer deposit.
How does this cause Earth’s surface to change?

8. Deposition in Water
A river’s current slows down when it empties into a large body of water.
This is called a delta.
The sediment is deposited in water.
How does this cause Earth’s surface to change?

9. Deposition in Water
A stream slows down when it flows onto a flat plain.
This is called an alluvial fan.
The sediment is deposited on land.
How does this cause Earth’s surface to change?

10. Deposition in Water A river overflows its banks.
This is called a flood plain.
The sediment is deposited on land.
How does this cause Earth’s surface to change?

11. Time to record what we have learned
Police Report
Time to record what we have learned
Materials: Handout, pencil, and an analytical mind

12. Crime Scene: Placer Deposit
Police report
Date: _____________________________________________________
Investigator: _______________________________________________
Crime Scene: Placer Deposit
Crime: Changing Earth’s surface
Suspects:
Picture:
Role in the Crime:
Weathering
Erosion
deposition
Breaks rock down into sediment
Water carries the pieces away
When the current slows down it drops the rock pieces.
Crime Scene: Delta
Crime: Changing Earth’s surface
Suspects:
Picture:
Role in the Crime:
Weathering
Erosion
deposition

13. Crime Scene: Alluvial Fan Crime: Changing Earth’s surface
Suspects:
Picture:
Role in the Crime:
Weathering
Erosion
deposition
Crime Scene: Flood Plain
Crime: Changing Earth’s surface
Suspects:
Picture:
Role in the Crime:
Weathering
Erosion
deposition