Earth’s Resources

Earth’s ResourcesEarth’s ResourcesChap. 25Chap. 25

Resources

Land Resources

Air Resources

Water Resources

Notes:Notes:

Quizzes: Quizzes: Section Assessments

Practice Test Questions

ResourcesResources

I.I. What is a natural resource?What is a natural resource?

Commodity that has value in its unmodified state.

I.I. What is a natural resource?What is a natural resource?

A.A. Renewable ResourceRenewable Resource

I.I. What is a natural resource?What is a natural resource?

A.A. Renewable ResourceRenewable Resource

Resource that is depleted more slowly than it is replenished.

I.I. What is a natural resource?What is a natural resource?

A.A. Renewable ResourceRenewable Resource

1.1. Living thingsLiving things

Living Renewable Resources

Lumber/Paper

Crops

Fish

Cattle/Sheep

Chickens

I.I. What is a natural resource?What is a natural resource?

A.A. Renewable ResourceRenewable Resource

1.1. Living thingsLiving things

2.2. Non-living thingsNon-living things

Non-living Renewable Resources

Sunlight

Fresh air

Fresh water

Soil

I.I. What is a natural resource?What is a natural resource?

A.A. Renewable ResourceRenewable Resource

B.B. Nonrenewable ResourceNonrenewable Resource

Resources that cannot be easily replaced

Nonrenewable Resources

Fossil fuels

Precious stones

Gold/Copper/Silver

Uranium

I.I. What is a natural resource?What is a natural resource?

II.II. Where are natural resources?Where are natural resources?

The End

Land ResourcesLand Resources

I.I. Protected landProtected landYellowstone

I.I. Protected landProtected landA.A. About 42% of US is public landAbout 42% of US is public land

I.I. Protected landProtected landA.A. About 42% of US is public landAbout 42% of US is public land

B.B. National parks preserve landNational parks preserve land

Sequoia Nat. Park

I.I. Protected landProtected landA.A. About 42% of US is public landAbout 42% of US is public land

B.B. National parks preserve landNational parks preserve land

C.C. Wildlife refuges protect Wildlife refuges protect animals’ natural habitatsanimals’ natural habitats

II.II. SoilSoil

II.II. SoilSoilA.A. Soil takes 1000 years to formSoil takes 1000 years to form

II.II. SoilSoilA.A. Soil takes 1000 years to formSoil takes 1000 years to form

B.B. Poor farming/overgrazing can Poor farming/overgrazing can lead to desertificationlead to desertification

III.III. MaterialsMaterialsA.A. Bedrock – limestone, granite, Bedrock – limestone, granite,

marblemarble

B.B. Aggregates – mixtures of Aggregates – mixtures of rocks/sandrocks/sand

C.C. Ores – material that is Ores – material that is profitable to mineprofitable to mine

The End

Air ResourcesAir Resources

I.I. OxygenOxygen

I.I. OxygenOxygenA.A. Makes up about 21% of air.Makes up about 21% of air.

I.I. OxygenOxygenA.A. Makes up about 21% of air.Makes up about 21% of air.

B.B. Believed to be introduced to Believed to be introduced to atmosphere about 4.5 bya.atmosphere about 4.5 bya.

I.I. OxygenOxygenA.A. Makes up about 21% of air.Makes up about 21% of air.

B.B. Believed to be introduced to Believed to be introduced to atmosphere about 4.5 bya.atmosphere about 4.5 bya.

C.C. Recycled primarily by Recycled primarily by photosynthesis.photosynthesis.

II.II. Disruption of Earth’s Disruption of Earth’s CyclesCycles

II.II. Disruption of Earth’s Disruption of Earth’s CyclesCyclesA.A. Carbon cycleCarbon cycle

II.II. Disruption of Earth’s Disruption of Earth’s CyclesCyclesA.A. Carbon cycleCarbon cycle

1.1. Increases Earth’s surface temp.Increases Earth’s surface temp.

II.II. Disruption of Earth’s Disruption of Earth’s CyclesCyclesA.A. Carbon cycleCarbon cycle

1.1. Increases Earth’s surface temp.Increases Earth’s surface temp.

2.2. Changes rainfall patternsChanges rainfall patterns

II.II. Disruption of Earth’s Disruption of Earth’s CyclesCyclesA.A. Carbon cycleCarbon cycle

B.B. Nitrogen cycleNitrogen cycle1.1. Burning fossil fuels releases nitrogen Burning fossil fuels releases nitrogen

compound into the atmospherecompound into the atmosphere

2.2. These compounds may become acid These compounds may become acid rain.rain.

III.III. Air pollutionAir pollution

Condition in which pollutants in the air become harmful to human health.

III.III. Air pollutionAir pollutionA.A. NaturalNatural

III.III. Air pollutionAir pollutionA.A. NaturalNatural

III.III. Air pollutionAir pollutionA.A. NaturalNatural

B.B. Man-made (anthropogenic)Man-made (anthropogenic)

III.III. Air pollutionAir pollutionA.A. NaturalNatural

B.B. Man-made (anthropogenic)Man-made (anthropogenic)

C.C. Indoor air pollutionIndoor air pollution

Indoor Air PollutionIndoor Air Pollution

III.III. Air pollutionAir pollutionA.A. NaturalNatural

B.B. Man-made (anthropogenic)Man-made (anthropogenic)

C.C. Indoor air pollutionIndoor air pollution

D.D. Radon gasRadon gas

Radon gasRadon gas

• Called radon-222Called radon-222

Radon gasRadon gas

• Called radon-222Called radon-222

• Colorless, odorless, tasteless, naturalColorless, odorless, tasteless, natural

Radon gasRadon gas

• Called radon-222Called radon-222

• Colorless, odorless, tasteless, naturalColorless, odorless, tasteless, natural

• Forms when uranium-238 decaysForms when uranium-238 decays

Radon gasRadon gas

• Called radon-222Called radon-222

• Colorless, odorless, tasteless, naturalColorless, odorless, tasteless, natural

• Forms when uranium-238 decaysForms when uranium-238 decays

• Seeps upward through cracksSeeps upward through cracks

Radon gasRadon gas

• Called radon-222Called radon-222

• Colorless, odorless, tasteless, naturalColorless, odorless, tasteless, natural

• Forms when uranium-238 decaysForms when uranium-238 decays

• Seeps upward through cracksSeeps upward through cracks

• Has cause about 13,000 lung cancer Has cause about 13,000 lung cancer deathsdeaths

The End

Water ResourcesWater Resources

I.I. Water factsWater facts

I.I. Water factsWater factsA.A. It covers about 71% of It covers about 71% of

Earth’s surface.Earth’s surface.

I.I. Water factsWater factsA.A. It covers about 71% of It covers about 71% of

Earth’s surface.Earth’s surface.

B.B. The oceans contain 97% of The oceans contain 97% of Earth’s water.Earth’s water.

I.I. Water factsWater factsA.A. It covers about 71% of It covers about 71% of

Earth’s surface.Earth’s surface.

B.B. The oceans contain 97% of The oceans contain 97% of Earth’s water.Earth’s water.

C.C. Most animals are about 50-Most animals are about 50-60% water.60% water.

II.II. Water propertiesWater properties

II.II. Water propertiesWater propertiesA.A. Exists as a liquid over a Exists as a liquid over a

large temperature range.large temperature range.

II.II. Water propertiesWater propertiesA.A. Exists as a liquid over a Exists as a liquid over a

large temperature range.large temperature range.

B.B. Has a large heat-storage Has a large heat-storage capacity.capacity.

II.II. Water propertiesWater propertiesA.A. Exists as a liquid over a Exists as a liquid over a

large temperature range.large temperature range.

B.B. Has a large heat-storage Has a large heat-storage capacity.capacity.

C.C. Dissolves many substances.Dissolves many substances.

II.II. Water propertiesWater propertiesA.A. Exists as a liquid over a Exists as a liquid over a

large temperature range.large temperature range.

B.B. Has a large heat-storage Has a large heat-storage capacity.capacity.

C.C. Dissolves many substances.Dissolves many substances.

D.D. Solid water expands.Solid water expands.

III.III. Use of FreshwaterUse of Freshwater

A.A. Some sources of freshwater Some sources of freshwater include. . .include. . .

III.III. Use of FreshwaterUse of Freshwater

A.A. Some sources of freshwater Some sources of freshwater include. . .include. . .

B.B. Use of freshwater includes. . . Use of freshwater includes. . .

III.III. Use of FreshwaterUse of Freshwater

IV.IV. Managing FreshwaterManaging Freshwater

A.A. Dams and Reservoirs capture Dams and Reservoirs capture water. This may be used for. . .water. This may be used for. . .

IV.IV. Managing FreshwaterManaging Freshwater

Three Gorges Dam (China)Three Gorges Dam (China)

Three Gorges Dam (China)Three Gorges Dam (China)PROS:

Three Gorges Dam (China)Three Gorges Dam (China)PROS:

• Clean energy source

• Increased shipping

• Better control of flooding.

CONS:

Three Gorges Dam (China)Three Gorges Dam (China)

CONS:

• Very costly ($27 billion)

• River will fill with silt

• Displaces 1.4 million people.

Three Gorges Dam (China)Three Gorges Dam (China)

A.A. Dams and Reservoirs capture Dams and Reservoirs capture water. This may be used for. . .water. This may be used for. . .

B.B. Water is transported through Water is transported through aqueducts and pipes.aqueducts and pipes.

IV.IV. Managing FreshwaterManaging Freshwater

California WaterCalifornia Water• Most precipitation Most precipitation

occurs in the _______ occurs in the _______ part of CA.part of CA.

• Most people live in the Most people live in the ______ part of CA.______ part of CA.

IV.IV. Managing FreshwaterManaging Freshwater

A.A. Dams and Reservoirs capture Dams and Reservoirs capture water. This may be used for. . .water. This may be used for. . .

IV.IV. Managing FreshwaterManaging Freshwater

A.A. Dams and Reservoirs capture Dams and Reservoirs capture water. This may be used for. . .water. This may be used for. . .

B.B. Water is transported through Water is transported through aqueducts and pipes.aqueducts and pipes.

IV.IV. Managing FreshwaterManaging Freshwater

A.A. Dams and Reservoirs capture Dams and Reservoirs capture water. This may be used for. . .water. This may be used for. . .

B.B. Water is transported through Water is transported through aqueducts and pipes.aqueducts and pipes.

C.C. Groundwater is pumped from Groundwater is pumped from aquifers. Too much withdrawal aquifers. Too much withdrawal causes drawdown.causes drawdown.

IV.IV. Managing FreshwaterManaging Freshwater

V.V. DesalinationDesalination

A.A. Salt water is distilled.Salt water is distilled.

V.V. DesalinationDesalination

A.A. Salt water is distilled.Salt water is distilled.

B.B. This process can be slow and This process can be slow and expensive.expensive.

V.V. DesalinationDesalination

A.A. Salt water is distilled.Salt water is distilled.

B.B. This process can be slow and This process can be slow and expensive.expensive.

C.C. Reducing use.Reducing use.

V.V. DesalinationDesalination

A.A. Salt water is distilled.Salt water is distilled.

B.B. This process can be slow and This process can be slow and expensive.expensive.

C.C. Reducing use.Reducing use.

V.V. DesalinationDesalination

1.1. Farmers change watering techniques.Farmers change watering techniques.

A.A. Salt water is distilled.Salt water is distilled.

B.B. This process can be slow and This process can be slow and expensive.expensive.

C.C. Reducing use.Reducing use.

V.V. DesalinationDesalination

1.1. Farmers change watering techniques.Farmers change watering techniques.

2.2. Domestic users change habits.Domestic users change habits.

The End