The atmosphere surrounds us all and, consequently, affects all of us. Atmospheric conditions affect you, your family, your friends, and the maniac down the street. They also affect all the plants and animals in the area. As part of this assignment you will design and conduct an experiment that investigates the effects of a specific atmospheric conditions on worms.


You will design and conduct an experiment that answers the following question: How does a specific atmospheric condition affect worms (life)?

In designing and conduction your experiment, please keep the following guidelines in mind:

· Worms should not be harmed maliciously

· Be careful when handling the acid rain solution, should you decide to use it.

Materials, facilities, and resources: Materials can be added or subtracted as needed. The following are a few ideas of things you may or may not want to use. You will certainly not need to use all of them. You may want to use some items that are not listed. You should be able to borrow these materials from your local high school teacher or purchase them for a minimal amount at local stores.

  • Small paint brushes
  • Straws
  • String
  • Colored light sources
  • Thermometers
  • UV light source
  • Wind source (fan)
  • Ice
  • Scales
1. Determine exactly which changed atmospheric condition you would like to simulate in your experiment. For example, you may want to test the effect of acid rain on worms or global warming or increased carbon dioxide levels, etc. Decide on the specific question that you would like to test and write it down.

2. Write a hypothesis that answers your question. For example, “If earthworms are subjects to a 10 F degree increase in temperature (global warming) then they will become less active and lose weight.”

3. Write a set of procedures that will test your hypothesis. Be sure to include a time line. Your experiment may last a little as 60 minutes or as long as a week. You do not need to plan an experiment that lasts longer than a week.


SEND your question, hypothesis, and procedures to me. You MUST get your experiment design approved before you continue. Any work done before you receive my approval may not be counted.

5. AFTER you have received my go-ahead, conduct your experiment. Be sure to keep detailed lab notes. Your lab notes should contain a record of everything you did as well as all the data you collected. Every entry on your lab notes should be dated (month/day/year)

6. Follow the directions below to submit your assignment.


A. Re-send me your original question, your hypothesis, and your experimental plan.

B. Send me your lab notes. I want to the observations that you recorded. Do not simply send me a summary of your results. I want to see a record of everything you did as well as the data you collected.

C. Based on your observations, write a conclusion. What does your data tell you? What did you learn from your experimental results?

D. What kind of relationships did you find between worms and your selected atmospheric condition?

E. Do your findings support your hypothesis? Why or why not?

F. If you were to do this again, what would you change? Why?

G. What additional experiments could be performed?


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