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Constructive Process Essential Questions What are surface features? What are examples of constructive process? How can a surface feature be changed by a constructive process? What are surfaces features caused by constructive processes?

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Constructive Process Deposition a process of dropping sediment, dirt, rocks, or particles in on place.

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Constructive Process Examples of Deposition Constructive Process ForceSurface Feature Created Deposition water / riverDeltas water / riverFloodplains water / oceanBeaches and Barrier Islands windSand dunes Ice / glacierMoraines

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Other Constructive Processes Constructive Process ForceSurface Feature Foldingplate movements mountains Faultingplate movements Mountains Earthquakeplate movements cliffs (fault scarp) Volcanic Activity plate movements mountains / islands

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Constructive Process Lesson Review 1.Deposition is a process that A.Dissolves sediment B.Breaks down rock to form sediment C.Removes sediment from landforms D.Drops sediment to form landforms

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Lesson Review 2.Where do deltas form? A.In desert areas B.At river mouths C.On the banks of rivers D.In valleys formed by glaciers

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Lesson Review 3.Long shore currents in the ocean help create A.Beaches B.Dunes C.Rivers D.Drumlins

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Lesson Review 4.Volcanoes can create new land when they release A.Lava B.Water C.Faults D.mud

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Lesson Review 5.What forms moraines? A.Wind B.Rivers C.Glaciers D.Volcanoes

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Constructive Process Essential Questions What are surface features? Surface features are landforms and bodies of water that cover the Earths surface such as: Mountains, valleys, canyons, gorges, beaches, sand dunes, barrier Islands, flood-plains, moraines, and drumlins, volcanoes, oceans, lakes, and rivers

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Constructive Process Essential Questions What are examples of constructive process? Deposition Volcanic Activity Earthquake Activity Faulting Folding

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Constructive Process Essential Questions How can a surface feature be changed by a constructive process? By forces such as wind, water, ice, through the process of deposition. The movement of the Earths crust Plate Tectonics (movements)

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Constructive Process Essential Questions What are surface features formed from constructive processes? Delta Floodplains Barrier island Sand dune Moraine Drumlin Islands Mountain Ranges Cliffs Fault Scarps

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Destructive Process Essential Questions What are examples of destructive processes? How are surface features changed by destructive processes? What are examples of surface features caused by destructive processes?

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Destructive Processes Weathering The breaking down of rock Mechanical / Physical Freezing and thawing of Rock Water freezing and expanding in cracks of rock Impact of organisms Plant roots growing Animals burrowing Chemical Oxidation / rusting Carbonic Acid / acid rain Caverns Impact of organisms Acid from Lichen

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Destructive Process Erosion Movement of rock from one place to another Water / Rivers Canyons Gorges V shaped Valleys Water / Ocean Waves Sea arches Sea stacks Wind Buttes Desert pavements Ice / Glaciers U shape Valleys Gravity Mast Wasting

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Destructive Process Volcanic Activity Movement of Earths Crust (Plate tectonics) Reshaping of Mountains Earthquakes Movement of Earths Crust (Plate tectonics) Trenches cracks in the Earth Curst

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Lesson Review 1.What is weathering? A.A type of climate B.The transport of sediment C.The breakdown of rock D.The aging of rock

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Lesson Review 2.Which of theses is caused by chemical weathering? A.desert pavement B.formation of U-shaped valleys C.formation of rust D.ice expanding in cracks in rock at is weathering?

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Lesson Review 3.How do earthquakes change the land? A.They transport sediment. B.They form cracks in the surface. C.They release ash and lava. D.They cause chemical weathering.

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Lesson Review 4.A river can form A.Sea arches. B.U-shaped valleys. C.V-shaped valleys. D.Desert pavement.

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Destructive Process Essential Questions What are examples of destructive processes? Weathering Mechanical / Physical Chemical Erosion Volcanic Activity Earthquake Acuity

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Destructive Process Essential Questions How are surface features changed by destructive processes? Freezing and thawing of the earths crust Freezing water in cracks of rock Oxidation / rusting Carbonic acid / acid rain Impact of organisms Water / rivers and oceans Ice / glaciers Wind Gravity Movement of earths plates / plate tectonics

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Destructive Process Essential Questions What are examples of surface features caused by destructive processes? Caverns / Carbonic Acid V-shaped valleys / River water Canyon / gorges / River water Sea arches / Ocean Waves Sea stacks / Ocean Waves Buttes / Wind Desert pavements / Wind Reshaped mountains / Volcanoes Trenches / Earthquakes

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Controlling Constructive and Destructive Processes EQ How can constructive and destructive processes be controlled through the use of technology? How does technology affect constructive and destructive processes? What are examples of technology used to control constructive and destructive processes?

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Effects on Constructive Processes Dam a structure built across a river to control its flow Positive Effect Flood Control Hydroelectric Power Negative Effect Holds back sediment Prevents deposition of flood plains, deltas, and beaches

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Effects on Destructive Processes Prevention of beach erosion Groin a structure built perpendicular to the beach. Positive Effect Traps sand that moves along the shore and causing the beach to build up. Negative Effect Beach Erosion down stream is worse. Seawall a structure built parallel to the shore Positive Effect Protects land behind if from ocean the ocean waves Negative Effect Ocean side beach will erode Beach Nourishment sand from ocean or nearby rivers are pumped onto the beach

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Effects on Destructive Processes Prevention of beach erosion (cont) Seawall a structure built parallel to the shore Positive Effect Protects land behind if from ocean the ocean waves Negative Effect Ocean side beach will erode Beach Nourishment sand from ocean or nearby rivers are pumped onto the beach

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Effects on Destructive Processes Prevention of soil erosion Contour Plowing method in which farmers plow across the sided of hill instead of down Terracing the planting of corps on terraces (steps) built into steep hillsides. Windbreaks rows of plants or fences. Slow down wind and limit the distance it can carry soil. Vegetation used to hold soil in place Storm drain management a system of drains Prevents flooding and soil erosion

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Effects of Volcanoes and Earthquakes Volcanoes and Earthquakes can not be controlled; However scientist have ways to determine when and where these they might occur. Volcanoes instruments are used to detect changes in volcanoes Earthquakes Detailed maps show major faults Safety Education No new buildings on or near faults Building codes to resists earthquakes Seismographs measures earthquakes on a rector scale

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Lesson Review 1.What is the purpose of a groin? A.to strengthen dams B.to stop beach erosion C.to create new sediment on shorelines D.to break down headlands

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Lesson Review 2.Beaches that have eroded are reclaimed through A.weathering. B.building of seawalls. C.beach nourishment. D.building of terraces.

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Lesson Review 3.Which of these is not a way to prevent soil erosion? A.planting vegetation B.contour plowing C.building windbreaks D.building dams

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Lesson Review 4.Scientist know where earthquakes will occur because they know the locations of A.faults B.volcanoes C.mountains D.long-shore currents.

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Lesson Review 5.Which of these do scientists use to predict when a volcano is likely to erupt? A.the age of the volcano B.earthquakes beneath the volcano C.temperature of nearby rivers D.the hardness of rock near the volcano

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Controlling Constructive and Destructive Processes EQ How can constructive and destructive processes be controlled through the use of technology? Flooding Dams Beach Erosion Groins Seawalls Beach nourishment Soil Erosion Contour plowing Terracing Wind breaks Planting of vegetation Storm drain management systems

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Controlling Constructive and Destructive Processes EQ How does technology effect constructive and destructive processes? Dams Positive Effect Flood Control Hydroelectric Power Negative Effect Prevents deposition of flood plains, deltas, and beaches Groins Positive Effect Traps sand that moves along the shore causing the beach to build up. Negative Effect Beach Erosion down stream is worse. Seawalls Positive Effect Protects land behind from ocean waves Negative Effect Ocean side beach will erode

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Controlling Constructive and Destructive Processes EQ What are examples of technology used to control constructive and destructive processes? Dams Groins Seawalls Wind Breaks Contour plowing technique Terracing technique Storm Drainage Systems Beach Nourishment

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Unit Review 1.What landform forms from deposition at the mouths of rivers? A.a delta B.a floodplain C.a sand dune D.a moraine

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Unit Review 2.Deposition forms these features on coasts. A.drumlins B.floodplains C.barrier islands D.U-shaped valleys

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Unit Review 3.What causes V shaped valleys to form? A.deposition at river mouths B.erosion by rivers C.weathering by wind D.erosion by glaciers

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Unit Review 4.A dam across a river can cause A.the formation of a delta. B.the carving of a valley. C.the erosion of a beach. D.the formation of a sea stack.

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Unit Review 5.Which of these helps prevent the harmful effects of erosion? A.dams B.volcanoes C.Long-shore currents D.contour plowing

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Unit Review 6.In which type of climate are you most likely to find a sand dune tht is not on the coast? A.dry B.humid C.icy D.hot

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Unit Review 7.What is the purpose of a groin? A.to prevent chemical erosion of rock B.to release trapped sediment from behind dams C.to help predict volcanic activity D.to stop erosion of beaches

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Unit Review 8.What does erosion do? A.breaks down rock physically B.moves broken pieces of rock C.changes rock chemically D.change sediment into rock