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Natural Resources

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Natural Resources Lesson 4 pp. 40- 45 – PowerPoint PPT presentation

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Title: Natural Resources


1
Natural Resources
  • Lesson 4 ? pp. 40- 45

2
Natural Resource
  • Something in nature that is valuable to people
  • Used to make food, energy, and raw materials for
    products

3
1) Biological Resources
  • A natural resource that IS or WAS living.
  • Most important kind because used mainly for FOOD
  • EXAMPLES
  • TREES
  • Produce oxygen, absorb pollution, maple syrup,
    cook, heat, furniture, homes
  • PLANTS (food)
  • ANIMALS (food)
  • SOIL (food)
  • DEPEND on other natural resources
  • Ex most plants animals cannot live without
    air, sunshine, and water

4
2) Mineral Fuel Resources
  • Mineral natural resource found in rocks, (the
    solid material from which Earth is made)
  • Any substance taken from Earth and used by people
  • 100 common
  • People use to make products
  • Ex use graphite to make pencils, fertilizers,
    cement, chemicals

5
EXAMPLES of minerals
  • Fossil Fuels a natural resource used to provide
    heat and other energy
  • EX coal, natural gas, petroleum
  • USAGE
  • Provide heat/energy
  • Cook, heat buildings, power machines
  • Make products
  • Paint, aspirin, carpets, plastic products

6
RENEWABLE resource
  • CAN be made again by nature or by people in a
    practical amount of time
  • EXAMPLES
  • Fresh water (water cycle)
  • Soil (weathering)
  • Trees (if replanted)

7
How can renewable resources be made again?
  • By the water cycle
  • By nature when trees, animals, and plants die,
    they renew the soil by adding nourishing
    substances
  • By people by planting trees

8
NONRENEWABLE resources
  • One that takes too long to replace or cannot be
    replaced at all
  • SCARCE limited
  • Example if people use fresh water faster than
    water cycle replaces it
  • CONSERVATION actions people can take to save
    natural resources
  • Example
  • planting new trees to replace ones cut down
  • Using less water to allow the water cycle to
    recover
  • RECYCLING process designed to recover or reuse
    materials instead of throwing them away
  • Ex aluminum and steel cans, paper/newspapers,
    glass plastic containers

9
NONRENEWABLE RESOURCES
  • Fossil fuels are nonrenewable.

10
How do we protect natural resources?
  • Conservation
  • Recycling
  • Using solar energy to heat homes and water
  • Planting new trees to replace those cut down

11
Review Questions
  • Write answer in notes (individually)
  • How do people use biological resources?
  • How do people use mineral and fossil fuel
    resources?
  • Why is it important to use natural resources
    wisely?

12
Answers
  • 1) Trees provide wood for building, heating, and
    cooking. People use plants and animals for food.
  • 2) Minerals can be used to make products fossil
    fuels can be used to cook food, heat buildings,
    and power machines.
  • 3) Some natural resources take a long time to
    replace or cannot be replaced at all.

13
Using Old Resources in New Ways
  • Sun (solar power)
  • Heat
  • Provide hot water (bathe, clean)
  • Generate electricity
  • Its clean little pollution

14
Using Old Resources in New Ways (continued)
  • Wind (clean)
  • Gather winds
  • Send wind into turbines
  • Produces electricity
  • Unreliable / Unavailable in some areas

15
Using Old Resources in New Ways (continued)
  • Tidal energy (from water - clean)
  • Energy of water as it flows high to low tides
  • Disadvantage dams can be built in only few
    places
  • Generates electricity

16
Why do natural resources matter?
  • We cannot live without water.
  • If a group lacks a resource, it must trade with
    other groups to get that resource.
  • If there are not enough resources in an area,
    people may destroy a piece of the area to get all
    of the resource until it is no longer available.
    Thus, plants and/or animals can become extinct.
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