chapters 5.1, 10.4, 11.4 & 15.4 natural resources & conservation
TRANSCRIPT
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CHAPTERS 5.1, 10.4, 11.4 & 15.4
NATURAL RESOURCES & CONSERVATION
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E.Q. – How can water, soil & air be recycled?
Standard S6Ej. Describe methods for conserving natural resources such as water, soil, and air.
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NATURAL RESOURCENatural Resource - Any natural material
that is used by humans orResources that the Earth provides for you
EX: Water, Petroleum, Minerals, Forests
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RENEWABLE RESOURCESA Natural Resource that can be replaced at
the same rate at which the resource is used.
EX: Trees,Wind, Water
Although many resources are renewable, they still can be used up before they can be renewed.
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Nonrenewable ResourcesA resource that forms at a rate that is much
slower than the rate at which it is consumed.A fossil fuel is a nonrenewable energy resource
formed from the remains of plants & animals that lived long ago.
EX: Coal, Petroleum (Oil), Natural Gas
Once they’re gone, they’re gone!!
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CONSERVING NATURAL RESOURCESTo conserve natural resources, you should
try to use them only when necessary.
3 R’sReduceReuseRecycle
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SOIL POLLUTIONHow can soil be lost or damaged?
Exhausted – lose fertility because crops planted year after year.
Polluted – mining, chemical spills, HUMANS
Erosion – wind, water
Desertification – once wet area, undergoes drought conditions OR grazing animals OR cutting treeshttp://www.gly.uga.edu/railsback/CTW/ChinaDesertification.jpeg
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HOW CAN SOIL BE CONSERVED?
Soil conservation is the management of soil to prevent destruction.
Contour Plowing Crop RotationConservation PlowingWindbreaksLeaving soil fallow
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Contour Plowing plowing fields along curves of slopes
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Conservation Plowingdead weeds and stalks are left in the ground from year to year
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Crop Rotationplant different crops in a field from year to year
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Windbreaktrees planted along the edge of a field
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TerracingPrevents erosion from heavy rains on steep
hills
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WATER POLLUTIONHow can water be lost or cause damage?Point-Source Pollution- pollution that comes
from one specific site. EX: leak from a sewer pipe
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WATER POLLUTIONHow can water be lost or cause damage?Nonpoint-source Pollution – Pollution that
comes from many sources; Reaches bodies of water as runoff
EX: street gutters, fertilizers, eroded soil, drainage from mines
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Water Conservation Videohttp://www.sesamestreet.org/video_player/-
/pgpv/videoplayer/0/3a878aa1-1cff-464d-a0b0-64b204cdce3c/water_conservation
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How can Water be conserved?By using only the water needed
By recycling water
By using drip irrigation systems.
Waste water can be treated by sewage treatment plants and septic systems
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Air PollutionHow can Air cause damage or loss?Air Pollution - The contamination of the
atmosphere by the introduction of pollutants from human and natural sources
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Air PollutantsPRIMARY POLLUTANTSIndustrial emissionsVehicle ExhaustVolcanic Ash
SECONDARY POLLUTANTSThe formation of smog
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SOURCES OF HUMAN-CAUSED POLLUTIONIndustrial & Indoor Air PollutionAcid PrecipitationThe Ozone Hole
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How Can Air Be Conserved?By legislation, such as the Clean Air Act
By Technology such as scrubbers - devices used to remove pollutants before they are released by smokestacks
By changes in Lifestyle
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Final Countdown
One Important fact from lesson about Air
One Important fact from lesson about Water
One Important fact from lesson about Soil
Name an example of a renewable resource.
Name an example of a non-renewable resource.
One way in which something you learned TODAY relates to something you learned previously