Draw a table on your piece of paper to record temperature readings for each box.
Minutes Open box (In Sun):
Greenhouse box (In Sun):
Open box (No Sun):
Greenhouse box (No Sun):
Place a thermometer inside each box; facing up so you can read the temperature.
Tightly cover one of the boxes with clear plastic or glass. Leave the other box open.
Place the boxes in direct sunlight so the bottom of the box is filled with light. If it is a cloudy day, you can use two lamps, setting them directly over each box so that their light shines directly into the boxes. You can use one lamp if it can give equal light to both boxes.
Record the temperature in the boxes once each minute for fifteen minutes.
Remove the boxes from the direct sunlight and continue to record the temperature for another fifteen minutes.
Once you have recorded all of your results, respond to the questions below.
Questions:
In which box did the temperature rise faster?
In which box did the temperature rise higher?
How did the temperatures in the boxes change after removing them from the sunlight?
How does this experiment demonstrate the greenhouse effect?
What does each item used in the experiment represent in the actual greenhouse effect on Earth? For instance, the light used in the experiment represents the Sun. What does the bottom of the box, air in the box, and plastic wrap each represent in the greenhouse effect?
If you can, compare your results with another student and explain the differences or similarities in your findings.
What did you learn from this investigation?
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