- Suppose you are investigating the benefits of using various materials
as garden mulch. Mulch is any material that is spread over the surface of
soil as a covering. You want to find out which material keeps the most
moisture in the soil. Design a controlled experiment to answer this
question: Which mulch material helps soil hold on to the most moisture?
a. Write a hypothesis and identify the variables you will test. (2 points)
b. Describe the procedure you will use to test your hypothesis. Include mention of the
constants and a control group. (4 points)
c. How will you use the results of your investigation to support or refute your hypothesis? (2 points)
d. Explain how you can evaluate your methods to check for sources of error. (2 points)
as garden mulch. Mulch is any material that is spread over the surface of
soil as a covering. You want to find out which material keeps the most
moisture in the soil. Design a controlled experiment to answer this
question: Which mulch material helps soil hold on to the most moisture?
a. Write a hypothesis and identify the variables you will test. (2 points)
b. Describe the procedure you will use to test your hypothesis. Include mention of the
constants and a control group. (4 points)
c. How will you use the results of your investigation to support or refute your hypothesis? (2 points)
d. Explain how you can evaluate your methods to check for sources of error. (2 points)