What is an experiment that a class can conduct that shows how water vapour (greenhouse gas) contributes to climate change or global warming?I need to present to my class an experiment that they can...

What is an experiment that a class can conduct that shows how water vapour (greenhouse gas) contributes to climate change or global warming?

I need to present to my class an experiment that they can conduct about how the greenhouse gas water vapour contributes to global warming.

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ncchemist | eNotes Employee

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Here is a simple experiment that you can perform to show that water vapor is a greenhouse gas.  Take two large jars or plastic containers and place a thermometer inside each one.  Tape the thermometers to strips of cardboard so that they do not rest directly against the sides of the containers and will be shaded from any direct sunlight.  In one of the jars, place a small open container of room temperature water in the bottom.  Place a cover on top of both containers and allow the temperature in each jar to come to equilibrium.  Then place each jar out in direct sunlight and record the temperature in each jar at 10 minute intervals.  The temperature will rise in each jar over time.  After some period of time after the jars have heated up, place both jars inside a cooler room away from direct sunlight.  Record the temperature in each jar every 10 minutes as the air temperature in each jar cools down.  You will find that the temperature in the jar without water will cool down faster than the temperature inside the jar with the water container.  So this will show that water vapor is a greenhouse gas that helps retain heat.

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