1. Visual PPT Quiz 2
Scientific Method

2. Q1: Ultimately, all scientific knowledge comes from:
a. experimentation b. observation c. textbooks d. both a and b answers e. none of the answers are correct

3. Q2: A hypothesis must be:
a. proven correct b. testable c. observed d. experimental
e. always correct

4. Q3:
A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent (manipulated) variable in the experiment? the chemical the number of apples the first orchard the second orchard
a. the chemical b. the number of apples c. the first orchard d. the second orchard

5. Q4:
The orchard sprayed with the chemical yields an average of 60 apples per tree, the other orchard yields an average of 40 apples per tree. Based on the data, the scientist would:
a. report his data b. test the chemical on other plants c. determine that the chemical increases apple yield d. determine that the results were inconclusive
e. none are correct

6. Q5: In order for the apple tree experiment to be valid scientifically, both orchards must:
a. receive the same amount of sunlight b. receive the same amount of water c. have the same species of apple tree d. all of these e. none of these

7. Q6: Theories help scientists to:
a. explain large bodies of data b. prove hypotheses c. determine truth from lies d. propose new ideas about how the world works e. I really don’t know

8. Q7: If a theory is challenged by new evidence, which of the following could occur?
a. the theory could be altered b. the theory is accepted, not the evidence c. the evidence is wrong d. a vote is taken on whether to accept the new evidence e. All of them are wrong

9. Q8: All living things must:
a. move b. have two parents c. eat food d. maintain homeostasis e. none are correct

10. Q9: Why is a control variable important?
A. it is the only variable that you can change B. it is the outcome of the experiment
C. it ensures the results of the experiment are due to the independent variable
D. it ensures the results are due to the dependent variable
E. it makes the experiment better

11. Q10. The scientific method was developed to help scientists organize the process of solving problems.
A. true
B. false

12. Bonus(?pts): Which of these would be called results?
a. Number of Fruit Flies b. Counting Fruit Flies c. Seeing Fruit Flies on an Apple d. Wondering Why a Fruit Fly was Born