Renewable and Nonrenewable Resources Chapter 2. Theme Outline Lesson 2.2 Availability of ResourcesAvailability of Resources Removing Earth’s ResourcesRemoving.

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..