Mrs. Deringer's

The Greenhouse Effect

Our atmosphere is made up of different gases. As you learned, 78% nitrogen gas, 21% oxygen gas and the other 1% trace gases such as greenhouse gases. Three major greenhouse gases are carbon dioxide, water vapr, and methane. These three gases act like the glass walls of a greenhouse, trapping in the heat.

Energy radiated by the sun changes to heat when it reaches Earth. Some of this heat is reflected back through the atmosphere, but much of it remains trapped in the atmosphere by the greenhouse gases, keeping our Earth warm. If we didn't have greenhouse gases in our atmophere the Earth would much colder.

The greenhouse effect is for the Earth. It keeps the Earth warm. One greenhouse gas is carbon dioxide. Too much carbon dioxide in the air though, is causing problems leading to global warming. Click Here to learn more about Global warming



Click Here to watch an expermeint on the

Greenhouse Effect

Scientists are very concerned with the dangers of Global warming. Global warming is caused by human activity such as pollution. Pollution from the burning of fossil fuels is causes too many greenhouse gases to enter our atmosphere. Then more heat gets trapped in the atmosphere and the Earth's temperature gets higher.. This will cause an average increase in the Earth's temperature, which in turn causes changes in climate. A warmer Earth may lead to the polar ice caps melting which could cause flooding, extreme weather conditions like hurricanes and changes in rainfall patterns.

Click on the spinning earth to watch

an animation on the greenhouse effect.


Click on the screen to hyperlink to the Recycle game. You must download the game. Read the instructions on the page when you get there.

Want to play some more games???? Then click below.

Click on the light bulb to get some bright ideas of some very simple things that everyone can do to help stop global warming:
Characteristic: #3: Temperature The Greenhouse Effect
Below are the answers to lab book page 34.
On earth, the gases in our atmosphere act like a greenhouse keeping the earth warm. The energy from the sun enters Earth’s atmosphere and heats the surface of our planet. As the heat rises, some of it escapes into space. Greenhouse gases, such as carbon dioxide, methane and water vapor, trap some of this heat and keep it close to earth. This process is called the greenhouse effect because it is very similar to what happens in a real greenhouse.
The more greenhouse gases in the atmosphere the more heat that gets trapped, the warmer earth becomes. Greenhouse gases act like a blanket trapping the heat close to earth. Carbon Dioxide, one of the most common greenhouse gases, comes from the burning of fossil fuels. The three major fossil fuels are coal, oil, and natural gas. Therefore, every time coal is burned to produce electricity or oil is burned to run our cars, carbon dioxide is released into the atmosphere. There are several things we can do to reduce the amount of carbon dioxide reaching our atmosphere. Three things we can do are use alternative ways to produce electricity that do not require the burning of fossil fuels like, wind energy, solar energy, geothermal, hydroelectric etc. We can also reduce our waste by recycling, walking, turning off lights.
Many scientists are worried that an increase in greenhouse gases in our atmosphere will prevent heat from escaping, and then the Earth will became too warm. They believe that this will increase the normal temperature on Earth and result in what is called global warming.



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