Glaciers SB Notes 2014-2015 Name________________________Hr ____ The important points presented in class will be in the Left Column. Your job is to add details, sketches, thoughts or questions to the Right Column to better understand glaciers and how they have shaped our MN landscape. Given Information a. b. c. d. e. f. g. Details, Sketches, Thoughts, Additional Information Glaciers are full of dirt and rock, picked up or pushed ahead as they advance. How glaciers form Types of glaciers When glaciers erode (pick up and push along materials) as they advance, this is a _______________________________ process. Because… When glaciers melt, they leave behind all of the rock and dirt that they carried… ___________________ is unsorted (mixed) dirt/rocks left behind by the glaciers Glacial till is deposited through a ______________________________ process. Example: Because… h. Rock and sediment that are directly deposited by a melting glacier would make what kind of landform? i. As glaciers melt, they form glacial rivers that carry away materials…this forms broad, flat areas made of outwash from the glacier known as an outwash plain. (sediment is sorted by size) Why? Sketch: Outwash: Outwash Plain: **This is an example of W, E, OR D? (circle one) j. Depositing of Outwash in an outwash plain is a ______________________________ process. k. Rock and sediment carried by glacial meltwater rivers (washed out) and later dropped off would form what type of landforms? l. Glaciers form lakes several ways: 1) Scrape out areas that they pass over, changing the drainage patters of water. 2) Kettle Lakes form when a piece of ice is buried & later melts, leaving a closed hole that later fills with water. 3) Ice-dam lakes form when glaciers block the flow of rivers or glacial meltwater Because… Sketch: 1) 2) 3) m. Parts of ND, SD, and MN are known as the prairie pothole region. This region has many small lakes that are closed basins most likely formed by ____________________________________. **Finish the statements: Sketch: Ok! Now I understand that___________________________________________________. I still need help with ________________________________________________________.