Presentation on theme: "Greenhouse Effect As sunlight enters the Earth’s atmosphere, some of the radiation from the sun is reflected back into outer space But, some of that radiation."— Presentation transcript:
1Greenhouse EffectAs sunlight enters the Earth’s atmosphere, some of the radiation from the sun is reflected back into outer spaceBut, some of that radiation does not escape due to ‘greenhouse’ gases that reflect the radiation back in.
5What are the effects?If the amount of greenhouse gases has been increasing over the past 150 years due to the industrial revolution, how do you think that will affect the overall climate? WHY?If the climate changes, what will happen to the biomes?What will happen to the ecosystems within those biomes?
7Standard 5a5a: Students know how differential heating of Earth results in circulation patterns in the atmosphere and oceans that globally distribute the heat.
8Transfer of Energy on Earth Remember that only 50% of sun’s energy reaches the Earth’s surface.Energy from the Sun reaches the Earth and heats it.Heat is then transferred through the atmosphere in three ways – radiation, conduction, & convection
9Radiation, Conduction, Convection Radiation: Energy transferred in the form of rays or waves.Conduction: Energy transferred when warmer objects come into contact with colder objects.Convection: Energy transferred by the flow of materials. Hot air and liquid rises up while cooler air sinks
11Sun’s IntensityBecause the Earth is curved, the radiation from the Sun hits the Earth at different angles.Areas near the equator have direct sunlight (very hot)Areas at the poles have sunlight that is spread out (a lot cooler)
12Sunlight Most direct sunlight 90°N North Pole 66.5°N Arctic circle 90°S South PoleArctic circleTropic of CancerEquatorTropic of Capricorn
19Precipitation Hot air also brings water vapor with it. As air cools, water vapor turns into clouds and eventually turns into rainfall, or precipitation.Precipitation usually found at the equator and around 60°
22SeasonsThe different amounts of sunlight and the tilt of the Earth causes the seasons.When the Northern hemisphere is tilted towards the sun (June), north experiences summer and south experiences winter.When the Southern hemisphere is tilted toward the sun (December), north experiences winter and south experiences summer.