1. Bell work Thursday October 5, 2012
Name three natural resources.
What is the difference between renewable and non-renewable?
Put the answers on the back of the bell work sheet

2. Natural Resources Fossil Fuels – Oil, Coal and Natural gas
Food staples – Wheat, rice and corn
Land for agriculture
Land for housing, transport industry and human leisure activity
Land and water for waste disposal

3. Raw Materials Renewable Nonrenewable
Replaced as fast as plants and animals can grow
Examples:
Timber
Fish
Crops
Solar, hydroelectric, wind
Nonrenewable
Energy sources and minerals when used are gone forever and can not be replaced
Oil
Natural gas
Coal

4. Natural Resource Usage
Oceans – Overfished
Toxic wastes poured into oceans
Rivers used as disposal for waste
Forests clear cut for timber, paper, land for farming, roads, firewood and charcoal
Results on the earth

5. Problems from deforestation
Soil in deforested rainforests – thinning and lost because erosion (washes away) easily
Local weather changes - more storms
Increased runoff and more flooding
Loss of habitats and species extinction
More Carbon dioxide into air because less plants

6. Pollution
Harm done to environment by release of substances produced by human activities
Factories – chemical wastes
Agriculture- livestock waste, chemicals
Domestic waste – Trash, packaging
Nuclear fallout

7. Agriculture Overuse of fertilizers, herbicides & pesticides
Eutrification
Fertilizers wash into lakes and streams with run-off and adding nutrients causing excess growth of oxygen depleting plant life and a competition for oxygen so less fish

8. It is estimated that between 1880 and 1980 40% of all tropical rainforests were destroyedSO
Deforestation and agricultural chemical use have caused the most pollution side effects in our ecosystems

9. Ticket out the Door Give three reasons why the forests were destroyed
Give three effects that deforestation has on the environment
What two factors have caused the most pollution side effects on our ecosystems?

10. BW – Oct. 9, 2012 Draw a winding river Show the flow of the river
Put a factory on your river
Organism A, B, C and D
A is before the factory
B is right after the factory
C is down from b
D is farthest down the river
Question: Which organism lives in the most polluted water?

11. Greenhouse effect
Naturally occurring greenhouse gases act as blanket around the earth and prevent some heat energy escaping into space. Mainly infra-red radiation

12. Greenhouse effects and results
Air pollution by CO2 and Methane has increased the greenhouse effect and is contributing to global warming
Consequences – rise in sea level, flooding in low areas, changes in world climate and reduction in crop production

13. Natural vs Human Enhanced
<meta HTTP-EQUIV="refresh" content="0;url= body{display:none} --></style>
Website for this image
Greenhouse effect graphic. Left - Naturally occurring greenhouse ...
nps.gov
Full-size image
550 × 324 (Same sizex larger), 40KB
Search by image
Images may be subject to copyright.
Type:
JPG

14. Fill in the blanks
Solar ______ passes through the _____ and the _____ earth’s surface. The earth ______ heat energy back into the _______. This is mainly_______ radiation . Some of the heat energy is ________ by the greenhouse gases. This causes the _____ to warm up.
Warms Absorbed Air
Energy Space Radiates
Infra-red Atmosphere

15. Conservation Read conservation article
Describe the need for conservation of species and their habitats
Conservation of Natural resources
Water and non-renewable material including fossil fuels