1 What is a control in an experiment? A A standard for comparison B A variable that is changed C The result of the experiment D The hypothesis
2 A well-tested explanation that unifies a broad range of observations is a: A Theory B Hypothesis C Law D Prediction
3 Which step follows data analysis in the scientific method? A Conclusion B Hypothesis C Experiment D Observation
4 The metric system is commonly used in science because: A It is based on units of 10 B It is easier to guess C It uses inches D It is not consistent
5 A scientist wonders why plants grow towards light. This is a: A Question B Hypothesis C Conclusion D Law
6 A factor that is changed or manipulated in an experiment is the: A Independent variable B Dependent variable C Controlled variable D Constant
7 The group in an experiment that is exposed to the treatment is the: A Experimental group B Control group C Variable group D Constant group
8 The information collected during an experiment is called: A Data B Hypothesis C Conclusion D Theory
9 Which of the following is not part of the scientific method? A Believing without evidence B Observation C Hypothesis D Experimentation
10 A testable explanation for a scientific question is called a: A Hypothesis B Theory C Law D Prediction
11 The factor that is measured or observed in an experiment is the: A Dependent variable B Independent variable C Control variable D Experimental variable
12 What is the main purpose of repeating an experiment? A To verify results B To change the hypothesis C To have more fun D To waste time
13 Which of the following is a characteristic of a good hypothesis? A Testable and specific B Vague and general C Impossible to test D Based on opinion
14 Which of the following is a way to communicate scientific results? A All of these B Publishing a paper C Giving a presentation D Creating a poster
15 In an experiment, the variable that stays the same is called: A Controlled variable B Independent variable C Dependent variable D Responding variable
16 What is the first step of the scientific method? A Observation B Hypothesis C Experiment D Conclusion
17 A conclusion is valid if: A It is supported by the data B It is a personal opinion C It is popular D It matches the hypothesis
18 The process of logical reasoning from observations is called: A Inductive reasoning B Deductive reasoning C Creative thinking D Intuition
19 The final step of the scientific method is often: A Communicating results B Forming a hypothesis C Conducting an experiment D Making observations
20 Scientists use evidence to: A Support or reject hypotheses B Ignore observations C Make assumptions D Avoid experimentation
21 What is an experiment? A A procedure to test a hypothesis B A random guess C A final conclusion D An observation without any plan
22 A systematic approach to solving problems is called: A Scientific method B Scientific theory C Scientific law D Scientific principle
23 What is the role of the independent variable in an experiment? A It is changed to see its effect B It is measured C It is kept constant D It is the result
24 What is the role of the dependent variable in an experiment? A It is measured to see the effect of changes B It is changed by the scientist C It is kept constant D It controls the experiment
25 A scientific law describes: A What happens in nature B Why something happens C A hypothesis that has been proven D A future prediction