"Sand and Erosion, Day Two"
Bellwork:
•1) _____________ is when rocks break down and are moved.
•2) Differential erosion means rocks erode __________________.
•3) Which is more eroded: mountain stream sand or beach sand?
- Review sand sample observations and what this means
•Sand 1: mountain stream - not been carried far so in different sizes and have sharp edges
•Sand 2: beach - moved a great distance and tumbled lots, so pretty similar, well-rounded, mostly quartz
•Sand 3: sand dune - buffeted by wind, some flat sides, frosted appearance
- Observe mystery sand and infer its location; mount on sand card
- Work in groups to complete "Sand Questions" on pgs. 49-51
- Complete Sand Quiz using computer multimedia on pg. 53 (username: cheetah, password: 112)
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