CHAPTER 3 SECTION 2 Wind Erosion and Deposition

Chapter 3 Section 2 Wind Erosion And Deposition-Free PDF

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Name Class Date,SECTION 2 Wind Erosion and Deposition continued. Wind can blow tiny particles away from larger rock. pieces during deflation Deflation happens when wind. removes the top layers of fine sediment or soil and leaves. READING CHECK behind larger rock pieces,3 De ne What is de ation. Deflation can form certain land features It can pro. duce desert pavement which is a surface made of peb. bles and small broken rocks In some places the wind. can scoop out small bowl shaped areas in sediment on. the ground These areas are called deflation hollows. Wind can grind and wear down rocks by abrasion, Abrasion happens when rock or sand wears down larger. pieces of rock Abrasion happens in areas where there. are strong winds loose sand and soft rocks The wind. blows the loose sand against the rocks The sand acts like. sandpaper to erode smooth and polish the rocks,Process Description. Large particles bounce and skip along the ground,TAKE A LOOK De ation.
4 Complete Fill in the blank,spaces in the table,What Landforms Are Produced by Wind. Deposition, Wind can carry material over long distances The wind. can carry different amounts and sizes of particles depend. Critical Thinking ing on its speed Fast winds can carry large particles and. 5 Infer What do you think may move a lot of material However all winds eventually. is the reason that fast winds slow down and drop their material The heaviest particles. can carry larger particles than, fall first while light material travels the farthest. slower winds, Wind can deposit extremely fine material Thick depos. its of this windblown fine grained sediment are known as. loess Loess feels like talcum powder Because the wind. can carry light weight material so easily a loess deposit. can be found far away from its source In the United. States loess deposits are found in the Midwest the. Mississippi Valley and in Oregon and Washington states. Copyright by Holt Rinehart and Winston All rights reserved. Interactive Textbook 46 Agents of Erosion and Deposition. Name Class Date,SECTION 2 Wind Erosion and Deposition continued.
Barriers such as plants and rocks can cause wind to. slow down As it slows the wind deposits particles on STANDARDS CHECK. top of the barrier As the dropped material builds up the ES 1c Land forms are the result. of a combination of constructive, barrier gets larger The barrier causes the wind to slow and destructive forces Con. down even more More and more material builds up on structive forces include crustal. deformation volcanic eruption, the barrier until a mound forms and deposition of sediment. A mound of wind deposited sand is called a dune while destructive forces include. weathering and erosion,Dunes are common in sandy deserts and along sandy. shores of lakes and oceans 6 De ne What is a dune,THE MOVEMENT OF DUNES. Wind conditions affect a dune s shape and size As the. wind blows sand through a desert it is removed from. some places and deposited in others This can cause. dunes to seem to move across the desert, In general dunes move in the same direction the wind.
is blowing A dune has one gently sloped side and one. steep side The gently sloped side faces the wind It is. called the windward slope The wind constantly moves. sand up this side As sand moves over the top of the. dune the sand slides down the steep side The steep side. is called the slip face READING CHECK,Windward 7 Identify In what direction. slope do dunes generally move,Wind direction Slip face. TAKE A LOOK,8 Compare How is the,windward slope of a dune. Direction of different from the slip face,dune movement. The wind blows sand up the windward slope of the dune The sand moves over the. top of the dune and falls down the steep slip face In this way dunes move across. the land in the direction that the wind blows, Copyright by Holt Rinehart and Winston All rights reserved.
Interactive Textbook 47 Agents of Erosion and Deposition. Name Class Date,Section 2 Review NSES ES 1c 2a,SECTION VOCABULARY. abrasion the grinding and wearing away of rock loess ne grained sediments of quartz feldspar. surfaces through the mechanical action of hornblende mica and clay deposited by the wind. other rock or sand particles saltation the movement of sand or other. de ation a form of wind erosion in which ne sediments by short jumps and bounces that. dry soil particles are blown away is caused by wind or water. dune a mound of wind deposited sand that,moves as a result of the action of wind. 1 Identify Give two land features that can form because of deflation. 2 Describe What areas are most likely to be affected by wind erosion Give two. 3 Identify The figure shows a drawing of a sand dune Label the windward slope. and the slip face Draw an arrow to show the direction of the wind. 4 Explain How do dunes form, 5 Apply Concepts Wind can transport particles of many different sizes What sized. particles are probably carried the farthest by the wind Explain your answer. Copyright by Holt Rinehart and Winston All rights reserved. Interactive Textbook 48 Agents of Erosion and Deposition. G Earth s Changing Surface Answer Key continued, 3 Weathering happens when rocks are broken 3 The sand can have different colors which. down into smaller pieces Erosion happens come from the kind of rock it is made from. when soil and sediment are moved from one Black sand can form from the weathering of. place to another dark colored lava Light colored sand may be. 4 soil damage and erosion made of light colored minerals such as quartz. 5 contour plowing terraces no till farming 4 Waves carry sand up the shore parallel to. cover crops and crop rotation their direction of travel The waves wash. back into the ocean perpendicular to the,6 In no till farming stalks from older crops.
shoreline This causes sand to move in a,are left lying on the ground The stalks help. zig zag pattern parallel to the shoreline,to protect the soil from wind and rain This. helps to reduce soil erosion 5 sea arches sea stacks headlands wave cut. terraces sea caves,SECTION 2 WIND EROSION AND,Chapter 3 Agents of DEPOSITION. Erosion and Deposition 1 They hold the soil and rock in place. SECTION 1 SHORELINE EROSION AND 2 Large particles are too heavy and the wind. DEPOSITION doesn t have enough energy to carry them. 1 Waves remove sand from shorelines during 3 the process in which small sediment par. erosion and add sand during deposition ticles are removed by the wind leaving. 2 12 s behind larger particles, 3 Crashing waves can break solid rock apart 4 Process Description. Water can enter cracks in the rock and Saltation Large particles bounce and. break pieces off skip along the ground, 4 If the storm does not include strong winds De ation Small particles are removed.
large waves will probably not be produced,Abrasion Rock pieces are worn away by. 5 Sea arches are connected to the mainland wind carried sand. but sea stacks are not,5 Fast winds have more energy so they can. 6 a body of rock that sticks out into the sea,lift larger particles. 7 A beach is an area along a shoreline that is,6 a mound of wind deposited sand. covered by materials that were carried there by,waves 7 the same direction the wind is blowing.
8 quartz 8 The windward slope has a gentler angle than. 9 Sand particles are washed away during storms the slip face. 10 Waves wash onto the beach in the same Review,direction that they wash off the beach so. 1 desert pavement deflation hollows,there is no sideways movement of water. 2 areas with little plant cover and or with fine,11 a ridge of deposited material in open water. loose soil or sand such as coastlines and, 12 a sandbar that is connected to the shoreline deserts. 13 Barrier spits are connected to the shore but 3 Student should label the gently sloping side. barrier islands are not windward slope and the steeply dipping side. slip face the arrow should point to the right,4 When wind hits a barrier such as a plant a.
1 A shoreline is the boundary between land rock or a building it slows down The sedi. and water A beach is part of a shoreline that ment that it has been carrying is deposited. is made of deposited sediment onto the barrier making the barrier larger. 2 Answers include wind produces waves Eventually the barrier is completely covered. which erode and add to the shore waves by sediment forming a dune. 5 The wind can carry small particles the,farthest because they weigh the least. Copyright by Holt Rinehart and Winston All rights reserved. Interactive Textbook Answer Key 47 Earth s Changing Surface. Wind Erosion and Deposition continued DEFLATION Wind can blow tiny particles away from larger rock pieces during deflation Deflation happens when wind removes the top layers of fine sediment or soil and leaves behind larger rock pieces Deflation can form certain land features It can pro duce desert pavement which is a surface made of peb bles and small broken rocks In some places the

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