1. Earth’s Resources

2. Natural Resources
The parts of the environment that are useful or necessary for survival of living things.
Air, food, water, sunlight, crops
Cotton, steel, coal, oil,
Categorized as Renewable, Inexhaustible, or Nonrenewable

3. Renewable Resources
These resources are replaced or recycled by Earth or living process
Replacement usually can take place within a short amount of time
These resources may be part of a cycle.
Oxygen, water (‘hydro’ or tidal), crops, Geothermal (earth) O2

4. Inexhaustible Resources
Inexhaustible resources – never will run out
Sun, wind, power of tides

5. Non-renewable Resources
Any natural resource that is not easily replaced by nature (MILLIONS of years)
Fossil Fuels
Coal – used to produce electricity
Natural Gas – manufacturing, cooking, heating
Oil – power cars, airplanes, trains
Minerals & metals
Nonrenewable Resources make up
90% of all resources, one day we will be…

6. Pollution
Burning fossil fuels is how you get energy out of them, this results in lots of pollution
A pollutant is anything that contaminates the environment.
Pollution can affect air, water, and land.
Pollution may be caused by people, animals, or nature.
Population increasing year after year, more people, more pollution

7. How pollution affects …
AIR - smog, acid precipitation, global warming, greenhouse effect, ozone depletion, indoor air pollution
The ozone layer shields the Earth from some of the Sun’s harmful ultraviolet radiation (UV). Depletion (thinning) caused primarily by chlorofluorocarbons (CFC’s). Which are used as coolants in refrigerators, freezers, and air conditioners.

8. Ozone Depletion

10. Acid Rain
Emissions of sulfur dioxide and nitrogen oxides react with water vapor in the atmosphere to create sulfuric and nitric acids.

11. What is the greenhouse effect?
changes in the Earth’s atmosphere that may enhance the natural warming process and elevate global temperature
Most outgoing heat energy: trapped
CO2
CO2
blanket of carbon dioxide and other greenhouse gases
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2
What is the
greenhouse
effect?
CO2
CO2
CO2
CO2
CO2
CO2
CO2
CO2 C
CO2
CO2
CO2
CO2
CO2
CO2

12. How pollution affects …
WATER - Acid precipitation, wastewater from factories, thermal pollution, people directly dumping, pesticides, waste, sewage, oil spills, rain may wash land pollutants into nearby rivers or lakes
The water cycle moves pollution with it and contaminates our fresh water supply

13. How pollution affects …
Land – landfills (trash dump sites), erosion, deforestation, farming, pesticides / insecticides, over population
Top soil – rich soil vegetation grows in
Biomass (dead plants and animals) add nutrients to soil, natural fertilizers

14. What can be done?….. Conserve
3 R’s of Conservation
Reduce - cut back on using certain types of energy
Turn off Lights, TV, and Water when not in use
Car pool
Walk or ride a bike
Use cloth bags when shopping, instead of paper or plastic
Buy in bulk (less packaging)
Buy energy efficient appliances

15. What Should I Do?
LUNCH A Lunch box containing a thermos of drink, a piece of fruit such as an apple, pear or plum, a sandwich container, chips and/or carrots and celery sticks in a reusable plastic container, napkin.
LUNCH B Paper bag containing juice carton, sandwich wrapped in plastic wrap, bag of chips, Twinkie or fruit pie, banana, carrots or celery sticks wrapped in plastic wrap, and a pudding cup, napkin and spoon.

16. What can be done?….. Conserve
Reuse – use items more than once
Bring lunch in a reusable container
Buy used stuff, like recycled paper
Donate used clothing to a shelter

17. What can be done?….. Conserve
Recycle - a form of reusing that requires changing or reprocessing items
Avoid filling up landfill space; recycle aluminum, plastic, paper glass, and cardboard as well as tires, batteries and used motor oil.
Use composting.  A  compost is recycled plant matter. Food and yard scraps placed in a bin are converted into valuable garden soil in a matter of weeks. Composting can easily reduce by half the volume of material a household sends to a landfill.

18. Alternatives Wind Power Hydroelectric/Water
kinetic energy to electrical energy
Upside – no air pollution
Downside – not always windy
Hydroelectric/Water
potential energy to electrical energy
Upside – no air pollution
Downside – need a lake

19. Alternatives Geothermal Nuclear Power
thermal energy to electrical energy
Upside – No air pollution
Downside – Very localized
Nuclear Power
Nuclear energy to electrical energy
Upside – No air pollution
Downside – radioactive waste

20. Alternatives Solar Energy radiant energy to thermal energy
Upside – No air pollution
Downside – Cost