Controlled Experiments2

What is the the question Mark and Molly want to know the answer to?

• What is the best light source for the plant?

• How much water the plants need to be healty?

• Why is the plant not growing?

How often is Mark going to water the plant?

• once a week

• every day

• 3 times a week

Suggest a problem you can see happening  with Mark and Molly watering their plants with different amounts of water in a week. Please write in complete sentences. Sentences start with a capital letter and end with a period.

What was not fair in the experiment?

• Molly's plant received sunlight, Mark's did not

• Mark's plant received sunlight, Molly's did not

What is the independent variable in this experiment?

• amount of water

• pot size

• sunlight

Why should Molly and Mark repeat the experiment? Please write in complete sentences.

How many things may be different in a controlled experiment?

• 2

• 1

• 0

• 3