Q9. Janice has a geranium in a flowerpot, and after a while it dies. Janice thinks, "I

wonder if it is because of the type of potting soil I used?" So she goes to the store

and buys a new geranium and a different type of potting soil to plant it in. She also

waters this new geranium every other day and is careful not to forget about it like she

did before. After the plant survives for one year, Janice decides that her experiment

proved that this new brand of potting soil is excellent and recommends it to all her

friends. Use the information in the link above and:

Explain why Janice's experiment is actually NOT good enough to make the

interpretation that she made?

• Help Janice out by designing an experiment for her. Include all steps of the

scientific method and the information on the link above. Be sure to specifically

list all your variables and which type each is.

o

Make sure to label from the experiment the independent variable,

dependent variable, and control variables.

Q10. What is a "control group"? Why does an experiment need to have a control

group? (Hint: Look in the blue link above that says scientific experiments.)