Constructive Process Essential Questions
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Transcript of Constructive Process Essential Questions
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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?
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Constructive Process
• Deposition –– a process of dumping sediment, dirt, rocks,
or particles in on place.
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Constructive ProcessExamples of Deposition
Constructive Process
Surface Feature
Force
Deposition
Deltas water / riverFloodplains water / riverBeaches and Barrier Islands
water / ocean long-shore current
Sand dunes windMoraines and drumlins
Ice / glacier
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Other Constructive ProcessesConstructive
ProcessSurface Feature
Force
Folding Mountains Plate tectonics
Faulting Mountains Plate tectonics
Earthquake Cliffs (fault scarp)
Plate tectonics
Volcanic Activity
Mountains / islands
Plate tectonics
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Constructive Process Lesson Review
1. Deposition is a process thatA. Dissolves sedimentB. Breaks down rock to form sedimentC. Removes sediment from landformsD. Drops sediment to form landforms
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Lesson Review
2. Where do deltas form?A. In desert areasB. At river mouthsC. On the banks of riversD. In valleys formed by glaciers
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Lesson Review
3. Long shore currents help createA. BeachesB. DunesC. RiversD. Drumlins
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Lesson Review
4. Volcanoes can create new land when they release
A. LavaB. WaterC. FaultsD. mud
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Lesson Review
5. What forms moraines and drumlins?A. WindB. RiversC. GlaciersD. Volcanoes
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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
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Constructive ProcessEssential Questions
• What are examples of constructive process?– Deposition– Volcanic Activity– Earthquake Activity– Faulting– Folding
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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
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Constructive ProcessEssential 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 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?
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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
– Tree roots – Animals burrowing
– Chemical• Oxidation / rusting• Carbonic Acid / acid rain
– Caverns • Impact of organisms
– Secretion of 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 Review1. What is weathering?
A. A type of climateB. The transport of sedimentC. The breakdown of rockD. The aging of rock
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Lesson Review2. Which of theses is caused by
chemical weathering?A. desert pavementB. formation of U-shaped valleysC. formation of rustD. ice expanding in cracks in rock at is
weathering?
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Lesson Review3. 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 Review4. A river can form
A. Sea arches.B. U-shaped valleys.C. V-shaped valleys.D. Desert pavement.
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Destructive ProcessEssential Questions
• What are examples of destructive processes?– Weathering
• Mechanical / Physical• Chemical
– Erosion– Volcanic Activity– Earthquake Acuity
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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
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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
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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 damsB. to stop beach erosionC. to create new sediment on
shorelinesD. 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 vegetationB. contour plowingC. building windbreaksD. building dams
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Lesson Review
4. Scientist know where earthquakes will occur because they know the locations of
A. faultsB. volcanoesC. mountainsD. 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 volcanoB. earthquakes beneath the volcanoC. temperature of nearby riversD. 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 deltaB. a floodplainC. a sand duneD. a moraine
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Unit Review
2. Deposition forms these features on coasts.
A. drumlinsB. floodplainsC. barrier islandsD. U-shaped valleys
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Unit Review
3. What causes V shaped valleys to form?
A. deposition at river mouthsB. erosion by riversC. weathering by windD. erosion by glaciers
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Unit Review
4. A dam across a river can causeA. 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. damsB. volcanoesC. Long-shore currentsD. 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. dryB. humidC. icyD. hot
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Unit Review
7. What is the purpose of a groin?A. to prevent chemical erosion of rockB. to release trapped sediment from
behind damsC. to help predict volcanic activityD. to stop erosion of beaches
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Unit Review
8. What does erosion do? A. breaks down rock physicallyB. moves broken pieces of rockC. changes rock chemicallyD. change sediment into rock