global warming power point

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Global Warming By Abigail and Hosanna

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Page 1: Global warming power point

Global WarmingBy Abigail and Hosanna

Page 2: Global warming power point

What is the greenhouse effect? Climate change? Global warming?The greenhouse effect is the trapping of the

sun’s warmth in a planet’s lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet’s surface.

Climate change is a change in the world’s climate.

Global warming the gradual increase in the temperature of the Earth’s atmosphere, believed to be due to the greenhouse effect caused by increasing levels of pollutants like carbon dioxide.

Page 3: Global warming power point

How are each related?For example, when humans use cars,

airplanes, factories, etc. they release pollutants into the atmosphere, where they are trapped by the greenhouse effect, which contributes to global warming, which is increasing the world’s climate change.

Page 4: Global warming power point

What are the primary causes of global warming?Burning fossil fuels like coal, oil, and natural

gas releases carbon dioxide, and about half of that stays in the atmosphere (this is the biggest factor for global warming).

• (A single gallon of gasoline, when burned, releases 19 pounds of carbon dioxide into the atmosphere)

Page 5: Global warming power point

What are the possible consequences if we do not work to stop global warming?Mass extinction in the oceans (acidity levels

rise)Redraw the planet’s coastlinesRavage food supplies

Page 6: Global warming power point

How is global warming impacting economy?Newly created land and recently melted

water could be worth millions of dollars, causing fights to be broken out over them.

There would also claims on the undiscovered oil and other natural resources hidden in the Arctic ice.

Page 7: Global warming power point

What are several ways we can all fight global warming?RecycleUse less heat and air conditioningChange regular light bulbs to fluorescent

light bulbsDrive your car less; try walking or riding a

bikePlant trees

All of these help to reducing the levels of carbon dioxide in the atmosphere.

Page 8: Global warming power point

What is the basic argument(s) against global warming?Some scientists believe that there is no evidence in

humans contributing to the Earth warming upTemperature data shows no warmingPredictions about global warming aren’t based on

historical dataReports from the Intergovernmental Panel on

Climate Change do not prove that humans cause global warming

A warmer climate would be beneficial to civilizationEfforts to reduce greenhouse gas emissions

wouldn’t be any help and be too costly

Page 9: Global warming power point

What are your personal opinions about global warming?Global warming does exist, due to evidence

like the polar ice caps melting. It’s a much more serious issue than most

people think it is, since it could seriously affect future civilizations and ecosystems.

Humans can’t ignore this and think up excuses for why it’s not real. It’s not going to go away by itself.

Page 10: Global warming power point

Sourceshttp://www.google.com/#http://www.nwf.orghttp://discovermagazine.comhttp://badgerherald.comhttp://environment.about.comhttp://www.aproundtable.org