1. Mrs. Brostrom Integrated Science C
The Greenhouse Effect
Mrs. Brostrom
Integrated Science C

2. Greenhouse Effect
Sun
Atmosphere
Earth

3. Greenhouse Effect
Sun
Atmosphere
Earth
Sun’s rays reach Earth

4. Greenhouse Effect Sun Atmosphere Earth Sun’s rays reach Earth
Earth is warmed

5. Greenhouse Effect Sun Atmosphere Earth Sun’s rays reach Earth
Earth is warmed
Heat radiates into atmosphere

6. Greenhouse Effect 4 1 3 2 Sun Atmosphere Earth Sun’s rays reach Earth
Earth is warmed
Heat radiates into atmosphere
Heat is absorbed by greenhouse gases and atmosphere warms 2

7. Greenhouse Effect Greenhouse Effect
The process by which energy from the sun heats the Earth’s atmosphere by warming certain gases
Without the greenhouse effect scientists think the Earth would be much colder
current average temperature is 58⁰ F (14 ⁰C)
without the greenhouse effect the average temp would be about 0⁰ F (-18⁰ C)
Too cold for life as we know it!

8. Greenhouse Gases Key Greenhouse Gases
Water vapor: about 80% of greenhouse effect
comes from evaporation of oceans
CO2: about 10%
comes from animals, volcanoes, combustion
Methane: about 7%
produced by bacteria
swamp gas, landfills, animal flatulence
Ozone: about 3 %
naturally produced in atmosphere

9. Mars- no greenhouse effect
average temp = -60⁰ F

10. Venus
Enormous greenhouse effect due to sulfur dioxide in atmosphere: average temp = 860⁰ F

11. Climate Change (Global Warming)
Humans have been producing huge amounts of CO2 for 120 years
Combustion of fossil fuels
CO2 levels in atmosphere have risen
Temperature has risen
If trend continues, there will be drastic consequences
ice caps/glaciers melting
sea level rise
droughts

12. Could be more droughts 12

13. Heat waves could bring more wildfires13

14. Could be more major storms14

15. Arctic ice is melting 15

16. Glaciers are melting 16

17. Sea levels are rising 17

18. Rising sea levels could submerge coastal cities18

19. Insect born disease could spread19