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In class, in newspapers, or on TV, you have probably heard of the 'greenhouse effect.' In order to understand what this is, you need to first understand how a real greenhouse works.
Greenhouses are used extensively by botanists, commercial plant growers, and dedicated gardeners. Particularly in cool climates, greenhouses are useful for growing and propagating plants because they both allow sunlight to enter and prevent heat from escaping. The transparent covering of the greenhouse allows visible light to enter unhindered, where it warms the interior as it is absorbed by the material within. The transparent covering also prevents the heat from leaving by reflecting the energy back into the interior and preventing outside winds from carrying it away.
In this activity you will be building and investigating a simple model greenhouse.
Materials (per team)
According to your teacher's directions, form teams of four and gather the materials listed above.
A. Experimental chamber construction
For each chamber, you will need a two-liter plastic soda bottle (with cap)
and a 14- to 16-oz. plastic container for the base.
B. Experimental Procedure
Observations and Questions
Record and graph the data in your lab book or on a separate piece of paper. Then answer the questions below.
When you're finished with the activity, click on Back to Teacher Guide at the top of the page.