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Human Impact on the Environment

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Marissa Kurtz

on 19 May 2016

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Transcript of Human Impact on the Environment

Human Impact on the Environment
design by Dóri Sirály for Prezi
The Greenhouse Effect
A natural warming of Earth's surface and lower atmosphere by greenhouse gases. This warming is NECESSARY for life.
Global Warming
-An increase in Earth's average global temperature.
Greenhouse Gases
* Water Vapor
* Carbon Dioxide
* Methane
* Other gases
Global Warming
Earth's average temperature is rising. Over the last century, the Earth's temperature has risen by about 1 degree Farenheit. This may seem small but it has melted glaciers and icecaps which causes problems everywhere.
Evidence suggests that excess greenhouse gases released into the atmosphere by human activities and natural processes are contributing to this global warming. Too many greenhouse gases is the problem.
Without the greenhouse effect, the Earth would be too cold to support life.
The greenhouse effect in general is not a bad thing! It is only bad when there are TOO many greenhouse gases.
These gases are responsible for trapping the sun's energy in our atmosphere so we stay warm at night
How does it work?
Energy from the sun enters the Earth. Some of this energy is reflected back to space by the Earth's surface/ atmosphere
The rest of the energy is absorbed by our surface.
The radiation is absorbed and then released by greenhouse gases in all directions, including back towards Earth's surface.
This causes a warming of the Earth's surface and lower atmosphere
How do humans tie into this?
Our actions increase CO2
Our actions increase methane
https://app.discoveryeducation.com/player/view/assetGuid/2E2EB8C5-65C5-4825-BAE9-4D5C2C283F43
Full transcript