Visual PPT Quiz 2 Scientific Method

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

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

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

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

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

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

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

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

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

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

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