1. Scientific Method

2. Which of the following statements is a testable hypothesis?
A) The number of earthquakes in California will increase by 10 percent over the next 50 years
B) Dark plastic and white plastic will heat up at the same rate
C) Soil on a steep hill will erode more quickly than soil on a gentle slope, because the steep hill gets more sunlight.
D) A sugar cube will dissolve slower than loose sugar of the same mass, because it has less surface area.

3. A bibliography of written sources A restatement of the hypothesis
Which of the following information belongs in the results section of an investigation report?
A bibliography of written sources
A restatement of the hypothesis
A description of the purpose of the investigation
Charts and graphs of the data recorded

4. At which point in conducting a controlled experiment should a conclusion be drawn?
As soon as the procedure is planned
As the variables are selected
Once the hypothesis is developed
After the data is obtained and analyzed

5. Which of the following is a necessary aspect of an investigation in order for the scientific community to accept the findings?
Government funding
Hypothesis proven correct
Small number of trials
Repeated trials of experimentation

6. A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and left them together in full sunlight. He gave each plant the same amount of water and charted the growth of each plant stem. What is the manipulated variable in this experiment?
A) soil
B) light
C) container
D) seeds

7. Which question cannot be answered scientifically because the quantity cannot actually be measured?
How happy is a chimpanzee when it finds it’s food?
How fast can a swallow-tailed butterfly fly?
How heavy is a mature female elephant?
How much food can a water buffalo consume in one day?

8. A biology class in Virginia conducted a survey of the plant species found on their school grounds. They found several plants that they didn’t recognize. What resources would be most helpful to the class in identifying the plants species?
A book about Virginia plant adaptations
A biology book
A dichotomous key on Virginia plant species
Local Home and Garden Newspaper Articles.

9. 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?
The number of students in the class
The accuracy of making and recording measurements
The number of males and females in the class
The difference of ages of students in the class

10. A student wants to view cells under the compound microscope at a total magnification of 400X. If the eyepiece is 10X, which of the following objective lenses should be used?
40X 4X
10X
100X

11. Law Theory Hypothesis Conclusion
A prediction was made that the best conditions for earthworm growth occur when there are fewer than five earthworms per cubic meter of soil. This prediction is called a
Law
Theory
Hypothesis
Conclusion

12. Which of the following statements is a fact?
Acid rain affects all organisms no matter what their environment.
Acid rain results from secret policies
The lower the pH of a rain sample, the more acidic it is
The governor said we should be proud our state has little acid rain

13. What is the correct order for steps in the scientific method?
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

14. A mineral supplement designed to prevent the common cold was given to two groups of people during a scientific study. Group 1: 50 mg a day Group 2: 100 mg a 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.

15. The jackrabbit population sometimes decreases dramatically
The jackrabbit population sometimes decreases dramatically. One possible explanation for this decrease is that the coyote population has increased. This explanation is a scientific
Law
Experiment
Hypothesis
Conclusion

16. 1) D
2)D
3)D
4)D
5)A
6)A
7)C
8)B
9)A
10)C
11)C
12)A
13)D
14)C