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

Greenhouse Effect Sun Atmosphere Earth

Greenhouse Effect Sun Atmosphere Earth Sun’s rays reach Earth

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

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

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

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!

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

Mars- no greenhouse effect average temp = -60⁰ F

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

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

Could be more droughts 12

Heat waves could bring more wildfires 13

Could be more major storms 14

Arctic ice is melting 15

Glaciers are melting 16

Sea levels are rising 17

Rising sea levels could submerge coastal cities 18

Insect born disease could spread 19