Saturday, January 02, 2016 A-Day Objective: YWBAT describe how ice, rivers, tree roots, and animals cause mechanical weathering. Drill: Describe the similarities between the ways tree roots and ice mechanically weather rock. Homework Play Outside!!

Answer Both tree roots and ice enter cracks in rock and expand, making the cracks wider and shattering the rock.

Did you know…? Before the Japanese government built a concrete base on Mount Fuji, as much as 300,000 tons of rock and soil were lost down the mountainside every year.

Today’s Activities  Drill  Set – up WOW  Trifold  Conclusion

Create a WOW Folder  Science * Drills - Drill 10-6 * WOW - WOW weathering

Mechanical Weathering Trifold Trifold must include:  About – definition & example  Abrasion – wind, water, & gravity – description & illustration  Ice wedging – description & illustration  Plants – description & illustration  Animals – description and illustration  It should be neat and spelled correctly

Closure Chemical or Mechanical: an alpine glacier advancing down a valley

Closure Answer Mechanical: an alpine glacier advancing down a valley