1. What is the difference between El Nino and La Nina?
Have you turned in your El Nino Article?

2. Human Impacts on Climate Change
The Greenhouse Effect
The greenhouse effect is a natural warming of both Earth’s lower ATM and Earth’s surface
Major gas – CO2
Without this effect, Earth would be too cold to support life

3. The Greenhouse Effect
Earth re-radiates heat back into the ATM (keeps temperature balanced)
This energy can remain within the atmosphere or return to the surface

4. The Greenhouse Effect
Greenhouse gases absorb some of Earth’s re-radiated heat and causes the Earth to warm naturally
Greenhouse Gases:
H2O (water vapor)
CH4 (Methane)
CO2 (Carbon Dioxide)***
Why do you use a blanket in the winter? To keep warm. Does your body heat escape from the blanket? No it stays trapped under the covers to warm you.
The earths ATM is like a blanket, keeping in the warmth and not letting it escape.

5. The Greenhouse Effect
Humans burning fossil fuels releases carbon dioxide into the atmosphere increasing the greenhouse effect leading to global warming.
Why do you use a blanket in the winter? To keep warm. Does your body heat escape from the blanket? No it stays trapped under the covers to warm you.
The earths ATM is like a blanket, keeping in the warmth and not letting it escape.
Factories could decrease the carbon dioxide levels in the atmosphere by transitioning from burning fossil fuels to using alternative energies

7. Increased CO2 levels has increased global temperatures
Increased temperatures = melting ice caps = rise in sea level

8. Deforestation Trees are vital for life Trees store greenhouse gases
When trees are cut down, they release these gases back into the ATM
20% of global CO2 emissions are caused by deforestation

9. Then get out your Climate Change notes from last week
Explain 1 one way that humans are increasing the rate of Global Climate Change
Then get out your Climate Change notes from last week

10. December updates

11. Air pollution is the contamination of the atmosphere
What are some examples of natural activities?

12. Natural Air Pollutants
Radon
Pollen
Mold Spores
Dust from plowed fields
Volcanic Eruptions
Forest Fires

13. Human Air Pollutants Chemicals (CFCs) Vehicle Exhaust
Burning of Fossil fuels
Industries
Planes
Ventilation
Trucks/Buses
Ships
Transportation forms releases CO2 into the air, reducing quality of the ATM

14. Burning of Fossil Fuels
Burning fossil fuels is the major cause of air pollution by releasing carbon dioxide and other gases into the air

15. Acid Rain
Acid Rain: air pollution in the form of precipitation with a pH of less than 5.0 (7 is neutral).
Acid rain forms when sulfur and nitrogen oxides combine in the ATM.

16. Acid Rain 90% of sulfur emissions are human origin (in eastern US)
Coal-burning power plants release significant amounts of sulfur in the ATM
These acids are included in the weather and water cycle

17. Ozone
Ozone can be beneficial in the upper layers of the ATM because it absorbs and filters UV rays
Ground-level Ozone is produced when combinations of air pollutants are exposed to sunlight

19. Ozone Depletion
The Ozone layer is thinning due to chlorofluorocarbons (CFCs) being released into the air
The “Hole in the Ozone Layer” is entirely a result of human activity

20. Effects of Ozone Depletion
Increase global temperatures
Human skin cancers/diseases
Failed crops
Unbalanced ecosystems (plants)

21.
Morgan freeman