Printable answer key
Scientific Method Basics
Use this answer key after players complete the quiz or when reviewing a printed worksheet.
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1. What is a hypothesis?
Correct answer: A. A testable explanation
Explanation: A hypothesis is a testable explanation or prediction that can be investigated.
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2. In a fair test, what should usually change on purpose?
Correct answer: A. One variable
Explanation: Changing one variable at a time helps show what caused the result.
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3. What is data in an experiment?
Correct answer: A. Information collected
Explanation: Data is the information collected through measurements, observations, or counts.
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4. Which tool is best for measuring liquid volume in a lab?
Correct answer: A. Graduated cylinder
Explanation: A graduated cylinder is designed to measure liquid volume.
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5. What should a conclusion be based on?
Correct answer: A. Evidence from results
Explanation: A conclusion should use evidence from the experiment or investigation.
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6. Why do scientists repeat experiments?
Correct answer: A. To check reliability
Explanation: Repeating experiments helps check whether results are reliable and consistent.
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7. Which is an observation?
Correct answer: A. The leaf is 8 cm long
Explanation: An observation uses senses or measurements, such as the leaf length.
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8. What is a model in science?
Correct answer: A. A representation of an idea or system
Explanation: A model represents an idea, object, or system so it can be studied more easily.
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9. Which question is easiest to test scientifically?
Correct answer: A. Which paper towel absorbs more water?
Explanation: Absorbency can be measured, while the other choices depend mostly on opinion.
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10. What should scientists do if results do not support a hypothesis?
Correct answer: A. Report the results honestly
Explanation: Honest results are useful even when they do not support the original hypothesis.