1. Homework YWBAT describe agents of mechanical weathering.
Saturday, April 27, 2019
Objective:
YWBAT describe agents of mechanical weathering.
Drill:
Describe three ways abrasion occurs in nature.
Homework
Study WOW

2. Answer
Abrasion can occur when rocks scrape against each other in a landslide, when rocks are tumbled by water in a river, or when rocks are “sandblasted” by small particles carried in the wind.

3. Did you know…?
Lichens, which consist of fungi and algae living together, contribute to chemical weathering.

4. Today’s Activities
Drill
Weathering Trifold
Conclusion

5. Chemical or Mechanical: Lichens and mosses growing on a boulder.
Closure
Chemical or Mechanical: Lichens and mosses growing on a boulder.

6. Chemical: Lichens and mosses growing on a boulder.
Closure Answer
Chemical: Lichens and mosses growing on a boulder.