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Constructive Process Essential Questions

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? . Constructive Process. Deposition –

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Constructive Process Essential Questions

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  1. Constructive ProcessEssential 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?

  2. Constructive Process • Deposition – • a process of dumping sediment, dirt, rocks, or particles in on place.

  3. Constructive ProcessExamples of Deposition

  4. Other Constructive Processes

  5. Constructive Process Lesson Review • Deposition is a process that • Dissolves sediment • Breaks down rock to form sediment • Removes sediment from landforms • Drops sediment to form landforms

  6. Lesson Review • Where do deltas form? • In desert areas • At river mouths • On the banks of rivers • In valleys formed by glaciers

  7. Lesson Review • Long shore currents help create • Beaches • Dunes • Rivers • Drumlins

  8. Lesson Review • Volcanoes can create new land when they release • Lava • Water • Faults • mud

  9. Lesson Review • What forms moraines and drumlins? • Wind • Rivers • Glaciers • Volcanoes

  10. Constructive ProcessEssential Questions • What are surface features? • Surface features are landforms and bodies of water that cover the Earth’s surface such as: • Mountains, valleys, canyons, gorges, beaches, sand dunes, barrier Islands, flood-plains, moraines, and drumlins, volcanoes, oceans, lakes, and rivers

  11. Constructive ProcessEssential Questions • What are examples of constructive process? • Deposition • Volcanic Activity • Earthquake Activity • Faulting • Folding

  12. Constructive ProcessEssential Questions • How can a surface feature be changed by a constructive process? • By natural forces such as wind, water, ice, through the process of deposition. • The movement of the Earth’s crust • Plate Tectonics

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

  14. Destructive ProcessEssential 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?

  15. 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 • Tree roots • Animals burrowing • Chemical • Oxidation / rusting • Carbonic Acid / acid rain • Caverns • Impact of organisms • Secretion of acid from Lichen

  16. 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

  17. 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

  18. Lesson Review • What is weathering? • A type of climate • The transport of sediment • The breakdown of rock • The aging of rock

  19. Lesson Review • Which of theses is caused by chemical weathering? • desert pavement • formation of U-shaped valleys • formation of rust • ice expanding in cracks in rock at is weathering?

  20. Lesson Review • How do earthquakes change the land? • They transport sediment. • They form cracks in the surface. • They release ash and lava. • They cause chemical weathering.

  21. Lesson Review • A river can form • Sea arches. • U-shaped valleys. • V-shaped valleys. • Desert pavement.

  22. Destructive ProcessEssential Questions • What are examples of destructive processes? • Weathering • Mechanical / Physical • Chemical • Erosion • Volcanic Activity • Earthquake Acuity

  23. Destructive ProcessEssential Questions • How are surface features changed by destructive processes? • Freezing and thawing of the earth’s 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 earth’s plates / plate tectonics

  24. Destructive ProcessEssential 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

  25. 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?

  26. 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

  27. 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

  28. 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

  29. 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

  30. 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

  31. Lesson Review • What is the purpose of a groin? • to strengthen dams • to stop beach erosion • to create new sediment on shorelines • to break down headlands

  32. Lesson Review • Beaches that have eroded are reclaimed through • weathering. • building of seawalls. • beach nourishment. • building of terraces.

  33. Lesson Review • Which of these is not a way to prevent soil erosion? • planting vegetation • contour plowing • building windbreaks • building dams

  34. Lesson Review • Scientist know where earthquakes will occur because they know the locations of • faults • volcanoes • mountains • long-shore currents.

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

  36. 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

  37. 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

  38. 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

  39. Unit Review • What landform forms from deposition at the mouths of rivers? • a delta • a floodplain • a sand dune • a moraine

  40. Unit Review • Deposition forms these features on coasts. • drumlins • floodplains • barrier islands • U-shaped valleys

  41. Unit Review • What causes V shaped valleys to form? • deposition at river mouths • erosion by rivers • weathering by wind • erosion by glaciers

  42. Unit Review • A dam across a river can cause • the formation of a delta. • the carving of a valley. • the erosion of a beach. • the formation of a sea stack.

  43. Unit Review • Which of these helps prevent the harmful effects of erosion? • dams • volcanoes • Long-shore currents • contour plowing

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

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

  46. Unit Review • What does erosion do? • breaks down rock physically • moves broken pieces of rock • changes rock chemically • change sediment into rock

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