110 likes | 317 Views
Section 3 Radiative Balance and the Natural Greenhouse Effect. http://www.bing.com/images/search?q=greenhouse+effect&qpvt=greenhouse+effect&FORM=IGRE#view=detail&id=8E45E35656FC95CB71B1F6C4439D06AC9A3F534D&selectedIndex=49. Learning Targets :.
E N D
Section 3 RadiativeBalance and the Natural Greenhouse Effect http://www.bing.com/images/search?q=greenhouse+effect&qpvt=greenhouse+effect&FORM=IGRE#view=detail&id=8E45E35656FC95CB71B1F6C4439D06AC9A3F534D&selectedIndex=49
Learning Targets: I can explain factors that cause the dynamic balance in the atmosphere to change. I can model and explain the relationships and energy flow existing in various Earth systems (atmosphere) http://4nutshells.com/wp-content/uploads/2010/10/Earths-atmosphere.jpg
30. Earth exchanges energy with its environment primarily through transfers ofelectromagnetic radiation. http://uniteunderfreedom.com/wp-content/uploads/2013/01/electromagnetic.jpg
31. At anytime our planet is simultaneously absorbing energy from the sunand radiating energy back intospace. http://www.johnsonwindowfilms.com/dealer/images/art_148/SunWavesToEarthBlu.jpg
Why does the temperature remains stable over long periods of time on Earth? The temperature remains stable because the planet radiates energy back to space at a rate that closely balances the energy input it receives from the sun. http://www.jamesrobertshaw.co.uk/wp-content/uploads/2011/06/The-sun-and-solar-radiation.jpg
Radiation from the Sun with varying wavelengthsalong the electromagnetic spectrum is known as • solar radiation. List 3 types of radiation the Sun emits. visible light, ultraviolet and infrared radiation http://newheavenonearth.files.wordpress.com/2011/07/sun-rays-coming-out-of-the-clouds-in-a-blue-sky21.jpg?w=900
35. When visible solar radiation reaches Earth, it may be absorbed by clouds, the atmosphere, or the planet's surface. http://beyondweather.ehe.osu.edu/files/2011/02/web_heat-budget.jpg
What raises Earth's surface temperature? Solar radiation is absorbed by the Earth’s surface and is transformed into heat energy. • Some outgoing infrared energy emitted from the Earth is trapped in the atmosphere and preventedfrom escaping to space, through a natural process called the greenhouse effect. http://www.enwin.com/kids/images/pic.greenhouse_effect.jpg
Ar Ar Ar • The most abundant gases in the • atmosphere—nitrogen, oxygen, andargon—neitherabsorb nor emit terrestrial or solar radiation. Ar Ar http://www.windows2universe.org/earth/Atmosphere/images/chemistry_troposphere_sm.gif
What in the atmosphere can absorb long-wave radiation? – clouds, water vapor, carbon dioxide, methane, and nitrous oxide http://icons.wxug.com/metgraphics/climate/sunearthdiagram.jpg
Why is the amount of heat received by the surface actually much larger (3x) than the amount the surface receives in solar radiation? Due to the natural greenhouse effect, the result is a surface temperature on average around 15°C (60°F), as compared to temperatures colder than –18°C (0°F) if there were no greenhouse effect. http://images.cpcache.com/merchandise/514_400x400_NoPeel.jpg?region=name:FrontCenter,id:69231149,w:16