Friday, February 1, 2008

"Weathering and Erosion"

Bellwork:
•1) Something that affects how much a rock erodes is…
•2) Two ways that erosion transports weathered materials are __________ and _____________.
•3) The youngest rocks are found at the ____________ of a rock column.

- Review what we've learned about sand and erosion
- Introduce vocabulary: weathering vs. erosion
•Erosion helps wear down rocks but it only happens by moving them (wind, water, ice, gravity)
•Weathering breaks down rocks into smaller pieces (can be caused by chemicals and physical forces)
- View "Weathering and Erosion" video and complete the film questions on workbook pages 61 and 63
- Exit Slip:
•“Three things I learned from the film are:
–1)
–2)
–3)