1. In order to come with the best hypothesis, it must be ___? A. proven correct C. observed B. experimental D. testable
2. How is a hypothesis tested? A. by using the hypothesis to make predictions about a system B. by comparing observations in nature with predictions C. by conducting an experiment and looking for results D. All of the above
3. During an experiment about a coin and feather that were dropped at the same time, it was found out that the coin reached the ground first. One student said: "Maybe, the coin is heavier than the feather. What do you call this kind of statement? A. an interpretation C. a conclusion B. a hypothesis D. a problem
4. What will you do if your hypothesis is incorrect? A. keep doing the experiment over and over again until you get the right answer B. repeat your test and change your hypothesis if necessary C. ask a friend for the right answer D. stop doing the experiment
5. A scientist is testing the affects of a chemicat on an apple orchard while another orchand does not receive any chemical spray at all. In the fall, the number of apples harvested from each orchard is counted. Which of the following is the independent (manipulated) variable in the experimenta A. the number of apples C. the first orchard B. the second orchard D. the chemical
6. The orchard sprayed with the chemical produces an average of 80 apples per tree, the other orchard produces an average of 40 apples per tree Based on the data, the scientist would? A determine that the chemical increases apple yield B. determine that the results were inconclusive C. test the chemical on the other plant D. report this data
7 possible answer to a question or problem. It is also called an educated guess A quantitative C. hypothesis B. observation D. inference
8. Which of the following is NOT a rule when writing a hypothesis? A. l should restate the question C. It is a prediction B. it is an it/then statement D. It is testable
9. A scientist hypothesizes the temperature at which an alligator's eggs incubated will determine whether the alligator will be male or female. What is the independent variable? A the gender of the alligator B. the male alligators C. the temperature D. the incubator
10. Which of the following hypotheses is written correctly? A. If a tennis ball is frozen, it won't bounce as high as to the one that is not frozen. B. If I freeze a tennis ball, then it will not bounce as high as expected. C. Frozen tennis balls will not bounce high. D. If I heat up a tennis ball it will bounce high.
11. What comes after the "because ..." portion of your hypothesis? A. your scientific reason C. your test B. your prediction D. all of the above
12. Complete the hypothesis. Question: Will a dog eat meat over vegetables? If... then... the dog will choose the steak because... dogs need protein more than vegetables. A. you feed a dog with steak and vegetables B. you feed a dog with steak and dog-food C. you feed a dog carrots and broccoli D. you plant vegetables with fertilizer
13. What comes after the "if..." part of your hypothesis? A. your scientific reason C. your test B. your prediction D. all of the above
14. What comes after your "then..." portion of your hypothesis? A. your scientific reason C. your test B. your prediction D. all of the above
15. Complete the hypothesis. Question: What effect does studying with music have on student test scores? If... one student studies with music and one student studies without music then... because... music can be distracting to some students A. the student who listened to music won't show up to class B. the student who listened to music will do worse on a test C. both students will do great D. it depends on the student
