1. Weathering & Erosion
Featuring Water

2. Rain Water Effects: Class Connection: Erodes (moves sediment) soil
Weathers (breaks down) rock
Mechanical Weathering
Physical
Streams & Rivers
Class Connection:
Run Off (water cycle)
The more sediment, the more erosion

3. Rain & Deposition Effects: Class Connections: Makes Layers Rock Cycle
Eroded soil & sediment flows & dries creating more & more layers
Forms New Rocks
As these layers are pressed together over time they create rocks
Class Connections:
Rock Cycle
Sedimentary Rocks

4. River Water Effects: Class Connections:
Canyons: Deep valley carved by water in an area of rock
Valleys (V-shaped): Smaller version of a canyon (made the same way)
Class Connections:
Run Off (water cycle)
The more sediment, the more erosion

5. Ice Wedging
Ice Wedging: The repetitive melting and freezing of water in a rock crack. The liquid water gets deeper in the crack as it freezes and ice expands it slowly makes the crack bigger and deeper (potholes in the spring)
Class Connections:
Frozen water expands (making it less dense) than liquid water!

6. Glaciers Glacier: slowly moving river of ice (NOT an iceberg) Effects:
Weathers & erodes rock as it grinds against the surface
Creates U-shaped valleys
Deposits sediment when it melts
Class Connections:
Very viscous, cold temperature

7. Caves Water flowing underground Effects: Class Connections:
Ponds/Streams
Stalactites
Stalagmites
Columns
Class Connections:
Solubility & Crystallization: As the dissolved minerals settle out of the flowing water, they form these cave features

8. Oceans & Lakes Oceans Lakes Class Connections:
Salty because all rivers & streams flow into the ocean (as the water moves over the land it absorbs minerals)
Na & Cl (salty)
Lakes
Not salty, refilled by rain
Freshwater, no outflow
Class Connections:
Water Cycle: Accumulation
Oceans from run-off
Polarity allows the salt to dissolve in the water
Lakes from precipitation

9. Water Vapor Effects: Class Connections:
As water vapor rises & mixes with pollution it becomes acidic & falls as acid rain
Chemical reactions with rocks
Makes lakes/streams acidic harming wildlife
Damages forests
Class Connections:
Polarity allows the water to dissolve minerals, changing the pH of the water to acidic

10. Erosion Demos Mechanical (Physical Weathering) – Marble Chips
Glaciers – Ice Cube & Tray & Valley
Ice Wedging – Water Bottle
Chemical Weathering
Marble & Granite w/ HCl
Pyrite & HCl w/ time
Acid Rain
Erosion
Tray with soil
River
Rain