Name ______Period ______Date ______
Scientific Method CRCT Review Day Quiz
1. The jackrabbit population sometimes decreases dramatically. One possible explanation for this decrease is that the coyote population has increased. This explanation is a scientific
A) Law
B) Experiment
C) Hypothesis
D) Conclusion
2. A biology class of 24 students decides to measure the height of each student and then calculate the average height for the class. Which of these is a possible source of error in this activity?
a. The number of students in the class
b. The accuracy of making and recording measurements
c. The number of males and females in the class
d. The difference of ages of students in the class
3. Which question cannot be answered scientifically because the quantity cannot actually be measured?
a. How happy is a chimpanzee when it finds it’s food?
b. How fast can a swallow-tailed butterfly fly?
c. How heavy is a mature female elephant?
d. On average, how much food does a water buffalo eat in a day?
4. At which point in conducting a controlled experiment should a conclusion be drawn?
a. As soon as the procedure is planned
b. As the variables are selected
c. Once the hypothesis is developed
d. After the data is obtained and analyzed
5. What is the correct order for steps in the scientific method?
a. have a question, formulate hypothesis, develop method, gather data, draw conclusion
b. formulate hypothesis, have a question, develop method, gather data, draw conclusion
c. formulate hypothesis, have a question, gather data, develop method, draw conclusion
d. have a question, formulate hypothesis, draw conclusion, develop method, gather data
8. What should a scientist do after coming up with a question about the natural world?
a) form a hypothesis
b) conduct a controlled experiment
c) analyze appropriate data
d) come up with a conclusion
9. A mineral supplement designed to prevent the common cold was given to two groups of people during a scientific study.
Dosage
Group 1 50 mg day
Group 2 100 mg day
After eight weeks, neither group reported a case of the common cold. Which of the following would have made the outcome of this study more valid?
A. Test only one group with 150 mg of the supplement.
B. Give the supplement to both groups for only 6 weeks.
C. Create a third group that receives 75 mg of the supplement.
D. Create a third group that does not receive the supplement.
10. Use the pictures below to answer the question:
Which question below would be MOST useful when developing a dichotomous key to identify the organisms seen here?
A) Does the cat have fur?
B) Does the cat have stripes?
C) Does the cat have four paws?
D) Does the cat live in Africa?