1. Think about a time when you have had your plans changed due to natural forces. How did this impact your life? Give specific examples. Examples - Severe Storm, bad weather Pair – Share – 2 min. Be ready to share your partners response!!!

2. Enduring Understanding: Students will understand the basic internal and external forces that shape the world in which they live.

3. Types of Weathering are…  Mechanical – When rocks and other minerals are broken into smaller pieces.  Chemical – When minerals are changed completely when they mix with water and air. Like metal changing to rust.

4.  Loess is wind-blown silt, sand, and clay.  Can form sand dunes 100’s of feet deep!

5. Examples?  Precipitation –  Mudslides –  Avalanche –

6.  Glaciation – changes in a landform made from a slowly moving sheet of ice (glacier)  Moraines – rocks left behind after a glacier moves  Creates new valleys, hills, or ridges

7.  Through the process of weathering and erosion of rocks  Humus – quality of soil 1. Texture of the soil 2. Amount of organic material in the soil

8.  Landforms Slideshow

15.  Quick Write for Understanding  How has this event impacted human life in the region?  Use appropriate vocabulary. (internal forces, external forces – erosion, wind, water, glacial) Chilean Earthquake/ Tsunami New Zealand Earthquake New York Erosion