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GENV 205 Greenhouse Effects Lab\
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To have students observe the greenhouse effect and analyze its effect on Earth.
Time:
This lab will take approximately 1 hour.
Materials:
2- or 3-liter plastic soda bottles (3 bottles per group) Lamp (100 watt or greater) One-hole stopper that fits in the mouth of the bottle 1 sheet of black paper and 1 sheet of white paper Thermometer Ruler or meter stick Tape
Procedure:
1. Each group should obtain a plastic soda bottle. Take the stopper and insert it into the mouth of the bottle.
2. CAREFULLY insert the thermometer into the stopper so that it hangs in the middle of the bottle. You might want to use petroleum jelly to help get the thermometer through the stopper without breaking it.
3. Record the initial temperature of the air in the bottle before turning on the lamp. 4. Position the bottle so that it is 15 cm from the lamp. 5. Turn the light on and watch the temperature change. Once the temperature has
not changed for approximately 3 minutes, record the final temperature in the data table that follows.
6. Take the white piece of paper and wrap it around half of the second bottle. Tape the paper on. Repeat steps 4 to 6 and record.
