Bellwork 12/03/10 Describe the ways that glaciers can cause erosion. Write 10 facts you learned from the video clips. Write 3 questions that you have about what you saw or learned. Weathering and Erosion Video Clips?title=Weathering_and_Erosion_by_Study Jams&video_id= Foldable Finish the glacier square on your foldable. Quickwrite: Have you ever been to the dunes? How do you think that they were formed? Quickwrite Have you seen the sand dunes near us in Yuma? Describe them. What do they look like? How do you think they were formed? Khongoryn Els, Mongolia How do dunes form? 1. Wind blows sand. 2. Sand rolls 3. Obstruction traps sand (rock, bikes, trees, wall, mound of sand etc.) 4. Sand accumulates on obstruction. 5.Dunes form. LOOK FAMILIAR? Could be. Deflation: Removes the loose, fine grained sediment such as clay and silt, leaving behind coarser material. Abrasion: Wearing or scraping away by sand grains or other particles striking other sand and rocks, breaking off fragments. Like sand blasting. A rock formation in the Altiplano, Bolivia sculpted by wind erosionAltiplanoBolivia Loess: A thick deposit of fine, wind-eroded sediments. Erg ChebbiErg Chebbi, MoroccoCoastal dunes in Curonian spit.Curonian spit Shiprock, New Mexico Red Rock Fin Erg ChebbiErg Chebbi, MoroccoCoastal dunes in Curonian spit. Curonian spit Erg ChebbiCuronian spit Dune PylaDune Pyla Wind Erosion Talk to a neighbor Why do you think that wind erosion has the greatest impact in the desert? Exit Slip 1.The wind erosion called _________ leaves behind large pebbles and boulders. 2.____________ is similar to sandblasting a building. 3.__________ is a fine-grained wind deposit. Weathering and Erosion BINGO 16 squares Put any of the words off of the word list that Ms. V gives you in ANY square Bingo Word List Bingo Word List Erosion Deposition Weathering Chemical Weathering Physical Weathering Ice Wedging Plants Growing Crystal Growth Oxidation Sand Dune Carbonic Acid Acid Rain Sediments Glacier erosion Wind erosion Water erosion Mass movement Mudflow Rockslide Plucking These are small particles or fragments of rocks. This is the process of breaking apart of the earths crust into sediments. This is when rocks are broken down and their chemical composition is changed. This is a land formation that wind erosion can create. This is a strong chemical that can weather rocks that is made from carbon dioxide and water. This type of weathering only changes the physical properties of a rock, it does not change the chemical make-up. This is the last part of the erosion process; it is where sediments are placed or put. This is when water freezes and expands, it causes mechanical weathering. This is the chemical weathering process that creates rust. This is when roots can break apart rocks and cause mechanical weathering. This is when gravity causes large amounts of sediments to be eroded. This is the most powerful cause of erosion it even created the grand canyon. This type of erosion is when large pieces of ice and snow move and can carve out areas of the earth like a bulldozer. This is an erosion type where sediments get saturated with water and then gravity makes them move down the side of a mountain, they can cause lots of destruction to homes below! This is when wind erosion is like sand blasting. This is a type of chemical weathering that is caused by pollution; it will fall from the sky and weather the ground below it. This is when sediments are picked up and moved by natural forces. This is a thick deposit of fine, wind eroded sediments. This is when a glacier picks up rocks and boulders and erodes the area around it. This is a type of mechanical weathering that breaks up rocks because the minerals are growing inside of it.