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Conserving Earth s Resources P.Lobosco Earth s Resource

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Conserving Earth s Resources P.Lobosco Earth s Resources Today, Earth s population continues to grow even as the resources shrink. Fossil Fuels and Minerals ... – PowerPoint PPT presentation

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Title: Conserving Earth s Resources P.Lobosco Earth s Resource


1
Conserving Earths Resources
  • P.Lobosco

2
Earths Resources
  • Today, Earths population continues to grow even
    as the resources shrink.

3
Fossil Fuels and Minerals
  • Fossil fuels and minerals are nonrenewable
    resources. Fossil fuels and minerals can be
    conserved by saving energy and by recycling.

4
Energy Conservation
  • Use energy efficient light bulbs.
  • Turn off lights when they are not needed.
  • Turn off television when you are not watching it.
  • Take a quick shower instead of a bath.
  • Fix leaking faucets and pipes.
  • Use the clothes washer and dryer only for full
    loads.
  • Thaw frozen foods.

5
Energy Conservation
  • Cook the entire meal in the oven instead of using
    several burners.
  • Make sure refrigerators and freezers are properly
    sealed.
  • Set the thermostat as low as possible.
  • Use the dishwasher only for full loads.
  • Allow dishes to air dry.

6
Energy Efficiency
  • Conserve fossil fuels by using them more
    efficiently. More efficient cars use less
    gasoline. Smaller cars also use less gasoline.
    Adding 100 kilograms to the mass of a car
    increases its consumption of gasoline by 6 .
    Driving slowly also saves gasoline. Use public
    transportation. Walk or ride a bicycle.

7
Recycling
  • Keep minerals in usable form by recycling. If
    recycling becomes an accepted part of everyday
    life, existing mineral resources would last
    longer, less land would be dug up and destroyed
    in the search for new mineral resources. The
    solid-waste problem would also be reduced.
    Recycling also contributes to energy conservation.

8
Pollution
  • Pollution is the release in to the environment of
    substances than can change the environment for
    the worse. If nothing is done to prevent
    pollution, the problem will only get worse as the
    human population increases. All parts of the
    environment are interrelated. Anything that
    damages one part can also damage other parts.

9
Protecting the Environment
  • People can prevent pollution by using energy
    wisely and be discarding wastes safely.

10
Safeguarding the Air
  • Gases and particles given off when fossil fuels
    are burned are called emissions. Some
    pollution-causing emissions are given off. These
    emissions include the poisonous gas carbon
    monoxide as well as nitrous oxides and sulfur
    oxides which cause acid rain when they react with
    water vapor in the air.

11
Reduction of Polluted Emissions
  • Improve emission control devices. Scrubbers can
    be used to wash suspended particles and sulfur
    oxides out of smokestack. Car emissions can be
    reduced by catalytic converters. A catalytic
    converter changes the hydrocarbons and carbon
    monoxide into carbon dioxide and water vapor.
    Pass a stronger Clean Air Act.

12
Greenhouse Effect
  • The carbon dioxide released into the air by
    automobiles and the burning of fossil fuels by
    industries contributes to the green house effect.
    The greenhouse effect has resulted in rising
    temperatures that are affecting the Earths
    climate resulting in melting ice caps an d more
    turbulent weather. Find and use alternative fuels.

13
Safeguarding our Water
  • In 1972 and 1974, the United States Congress
    passed two laws to fight water pollution. They
    were the Clean Water Act of 1972 and the Safe
    Drinking Water Act of 1974. Both of these laws
    were intended to stop the flow of untreated
    wastes into waterways form point sources. Point
    sources include sewers and pipes through which
    wastes are discharged.

14
Sewage Treatment Plants
  • Towns and cities were not required to build
    sewage-treatment plants or to improve existing
    plants. Such plants clean wastewater before it
    is discharged in to waterways. Similar treatment
    plants purify water for drinking. Industries
    were now required to clean their wastewater
    before releasing it into lakes and streams.

15
Nonpoint Sources
  • Nonpoint sources of water pollution include
    sanitary landfills that ooze poisonous liquids
    and industrial waste ponds that leak into the
    surrounding ground. Nonpoint sources also include
    illegally dumped hazardous wastes and runoff of
    pesticides and fertilizers. This are most harmful
    to the environment. They are also difficult to
    find and clean.

16
Solutions
  • Hazardous waste dumps must be checked carefully
    for leakage. Whenever possible hazardous waste
    should be properly disposed off at the
    factory.This is often difficult and expensive.
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