Renewable and Nonrenewable Resources Chapter 2. Theme Outline Lesson 2.2 Availability of...
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Transcript of Renewable and Nonrenewable Resources Chapter 2. Theme Outline Lesson 2.2 Availability of...
Renewable and Renewable and Nonrenewable Nonrenewable
ResourcesResources
Chapter 2Chapter 2
Theme OutlineTheme Outline
Lesson 2.2Lesson 2.2• Availability of ResourcesAvailability of Resources• Removing Earth’s ResourcesRemoving Earth’s Resources• Natural Events Can Affect Resource AvailabilityNatural Events Can Affect Resource Availability
Academic Standards for Academic Standards for Environment & EcologyEnvironment & Ecology
Standard 4.2.10.BStandard 4.2.10.B• Evaluate factors affecting availability of natural Evaluate factors affecting availability of natural
resources.resources.• Describe natural occurrences that may affect the Describe natural occurrences that may affect the
natural resources.natural resources.• Analyze technologies that affect the use of our natural Analyze technologies that affect the use of our natural
resources.resources.• Evaluate the effect of consumer desires on various Evaluate the effect of consumer desires on various
natural resources.natural resources.
Learning ObjectivesLearning Objectives
• Students will explain some of the technologies Students will explain some of the technologies that affect the use of natural resources.that affect the use of natural resources.
• Students will describe natural events that may Students will describe natural events that may affect natural resources.affect natural resources.
• Students will evaluate the effect of consumer Students will evaluate the effect of consumer demands on energy resources by contrasting demands on energy resources by contrasting energy uses and conservation in different energy uses and conservation in different regions.regions.
Earth’s ResourcesEarth’s Resources• One of the most challenging issues around resource One of the most challenging issues around resource
use, is the extraction of resources from the Earth.use, is the extraction of resources from the Earth.
• Common extraction methods:Common extraction methods:• Harvesting Food and FiberHarvesting Food and Fiber• QuarriesQuarries• Oil and Gas WellsOil and Gas Wells
Harvesting Food and FiberHarvesting Food and Fiber
• Manual removalManual removal• Example: hoe, sickle, and handsawExample: hoe, sickle, and handsaw
• Mechanized removalMechanized removal• Example: cultivators, tractors, windrowers, Example: cultivators, tractors, windrowers,
combines, and chainsawscombines, and chainsaws
QuarryQuarry• DefinitionDefinition: : excavation pit in Earth’s crust from whichexcavation pit in Earth’s crust from which
rock resources are removed.rock resources are removed.
• Large rock extractionsLarge rock extractions
Rock can be extracted using machines that leave large Rock can be extracted using machines that leave large slabs of rock intact.slabs of rock intact.
• Small rock extractionsSmall rock extractions
Rock can be extracted using machines that crush and Rock can be extracted using machines that crush and pulverize the rock into smaller rocks, which are pulverize the rock into smaller rocks, which are generally then sorted according to size.generally then sorted according to size.
QuarrieQuarriess
Oil and Gas WellsOil and Gas Wells• These wells are drilled using These wells are drilled using
a complex set of machines, a complex set of machines, engines, pumps, pipes, and engines, pumps, pipes, and drills to harvest oil, as well as drills to harvest oil, as well as the once thought “useless” the once thought “useless” natural gas products trapped natural gas products trapped underground in rock underground in rock formations.formations.
• Initial work is done using Initial work is done using specifically deigned rigs, specifically deigned rigs, which are later replaced by which are later replaced by oil wells once the product oil wells once the product begins to flow.begins to flow.
Natural Events Can Affect Natural Events Can Affect Resource AvailabilityResource Availability
Common natural events include:Common natural events include:• Severe WeatherSevere Weather• Biological InfestationsBiological Infestations• Natural Oil SeepsNatural Oil Seeps• FireFire
Severe WeatherSevere Weather• Period of excessive precipitationPeriod of excessive precipitation
• Example: can cause crops to rotExample: can cause crops to rot
• Periods of little (or no) precipitationPeriods of little (or no) precipitation• Example: decrease crop yields, crop failureExample: decrease crop yields, crop failure
• Extremely cold wintersExtremely cold winters• Example: reduce crop availabilityExample: reduce crop availability
• Extremely hot summersExtremely hot summers• Example: cause crops to dry, wilt, or dieExample: cause crops to dry, wilt, or die
Biological InfestationsBiological Infestations
• Unwanted organisms can enter and infect natural Unwanted organisms can enter and infect natural resources.resources.
• Many of these unwanted organisms are Many of these unwanted organisms are pathogens – pathogens – organisms that cause disease.organisms that cause disease.
• Found naturally in all bodies of freshwater.Found naturally in all bodies of freshwater.
Example: Example: Cryptosporidium, Giardia lambiaCryptosporidium, Giardia lambia
Natural Oil SeepsNatural Oil Seeps• Naturally occurring events that bring petroleum-based Naturally occurring events that bring petroleum-based
products to the surface of the Earth.products to the surface of the Earth.• Naturally processes breakdown these compounds, but if Naturally processes breakdown these compounds, but if
these compounds enter water supplies before this process these compounds enter water supplies before this process occurs, contaminations can occur.occurs, contaminations can occur.
FireFire• Major sources of ecosystem fires:Major sources of ecosystem fires:
• Forest fireForest fire NaturalNatural Human ActivitiesHuman Activities
• Volcanic eruptionsVolcanic eruptions
• Can potentially destroy acres of forested land that is potentially Can potentially destroy acres of forested land that is potentially
harvestable and marketableharvestable and marketable..