Scientific Method

1. What is science?

2. What do we call a step-by-step procedure for scientific problem-solving?

3. Scientists observe the world around them and ask questions about things they don't understand. Observations can involve any of the senses. Which is not probably NOT an observation?

4. What is the first step when solving a problem with the scientific method?

5. After identifying the problem, a scientist might develop a hypothesis. A hypothesis is -

6. A hypothesis is a prediciton or explanation that can be -

7. Why does a scientist perform an experiment?

8. Which statement is NOT true?

9. Experiments measure how changing the ______ variable affects the ____ variable.

10. In an experiment to discover which brand of bug spray does best at preventing mosquitos bites, the brand of bug spray is the __________.

11. In an experiment to determine which bug spray works best to keep mosquitos from biting, what is the dependent variable?

12. In an experiment to determine which brand of bug spray prevents mosquitos from biting, what are the constants?

13. In an experiment, what factor is is varied by the scientist?

14. While conducting an experiment, the scientist should -

15. In order to better analyze the experimental data, it's often a good idea to -

16. What type of graph might you create to show that the energy used in the U.S. comes -50% from fossil fuels; 10% from water; 10% from wind; 30% from other sources?

17. The application of science to make tools that people can use is -

18. An experiment is conducted to test the hypothesis that a certain type of houseplant grows best when exposed to sunlight exacty four hours per day. The independent variable is -

19. An experiment is conducted to test the hypothesis that a certain type of houseplant grows best when exposed to only four hours of sunlight per day. Which of the following is the dependent variable?

20. A ____ is an explanation that is based on the results of repeated experiments.