Processes That Shape the Earth I Can Study Guide I can describe how erosion by wind, water, and ice can reshape the earth. Important Vocabulary Glacier, debris, sediments, erosion Important Information Glaciers are VERY large and move slowly Glaciers can flatten the land Surface beneath a glacier is changed because the glacier is so heavy Glaciers create, mountains, valleys, peaks, ridges, cliffs, lakes and waterfalls Glaciers can shape the land by carrying away material in the earth Glaciers can shape the land by depositing sediments Textbook Pages Section 2 pages A22 – A24 I can describe how weathering of rock by freezing, thawing, and plant growth can reshape the earth Important Vocabulary Weathering, freezing, expands Important Information Water can freeze and get into cracks in the earth, when water freezes it expands and can make the cracks larger. Plants can grow in between cracks in rocks and the earth, causing the crack to get larger. Water in cracks can freeze, then thaw, refreeze and create larger cracks in our earth Textbook Pages Section 2, A11 and Packet pages 6 I can describe slow processes (for example, erosion, weathering, mountain building and deposition) that shape the Earth’s surface. Important Vocabulary Slow process, erosion, weathering, deposition Important Information Rivers flowing through the land can carve out valleys in mountains Wind blowing sand in the desert can carve our mountains Mountains can become rounded over millions of years by wind and water blowing on them Textbook Pages Section 2 pages A20 - 24 I can describe the rapid processes (for example volcanic eruptions, earthquakes, landslides and floods) that shape the Earth’s surface Important Vocabulary Earthquakes, volcanoes, landslides, floods, erosion Important Information Earthquakes, and volcanoes can quickly changes the land by creating cracks in the earth and covering the surface with lava. Landslides can be created by a flood from a storm or hurricane Floods are caused by heavy rain, storms or melting snow Textbook Pages Section 2, pages A10 - 12 I can describe how erosion, and deposition create the Earth’s landforms (for example, dunes, deltas, glacial moraines, canyons, sandbars) Important Vocabulary Erosion, deposition, sand dunes Important Information Sand dunes are created when wind or water pushes the sand into a large “hill” Oceans and rivers carry sediments and can deposit these sediments to create a delta. A fast moving river can carve our valleys. Textbook Pages Section 2, pages A10 - 15 I can describe weathering such as wind, glacial movement, plants growing through concrete, freezing, thawing, droughts, rust, acid rain, lichens, oxidation. Important Vocabulary Weathering, wind, acid rain, rust, oxidation Important Information Physical weathering is wind, water, plants growing in cracks of rocks Chemical weathering is acid rain, rust being created by oxidation Wind can carry sediments away Wind will blow loose soil and sand Wind will blow sand and act like “sandpaper” chipping away at the land Glaciers will flatten the land and carry sediments away, along with depositing sediments Wind will build up the land Freezing and thawing of water will cause cracks in the earth’s surface. Textbook Pages Section 2, pages A20-24 Packet pages1, 2, 3, 6 I can illustrate methods to control weathering, erosion, and deposition, (for example types of building materials, breakwalls, barriers, plant, etc.) Important Vocabulary Breakwalls, barriers, erosion, weathering Important Information Planting plants on a hill will slow or stop erosion of that hill, roots of the plants will hold the soil in place. Breakwalls near the ocean will stop or slow erosion of the shoreline Textbook Pages Section 2, pages A13 – A15 Packet pages 21, 26, 27