ExpertEasy1 markMultiple Choice
AQA GCSE · Question 04.4 · Atomic Structure
The results of the alpha particle scattering experiment were reproducible.
What does reproducible mean?
Tick (✔) one box.
The results of the alpha particle scattering experiment were reproducible.
What does reproducible mean?
Tick (✔) one box.
Answer options:
A.
Another scientist repeats the experiment and gets the same results.
B.
Another scientist repeats the experiment and gets different results.
C.
The same scientist repeats the experiment and gets the same results.
D.
The same scientist repeats the experiment and gets different results.
How to approach this question
Understand the definitions of key scientific terms:
- **Repeatable:** The original investigator repeats the investigation using the same method and equipment and obtains the same results.
- **Reproducible:** The investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained.
- **Accurate:** A result that is close to the true value.
- **Precise:** When repeated measurements are very close to each other.
Choose the option that matches the definition of "reproducible".
Full Answer
A.Another scientist repeats the experiment and gets the same results.✓ Correct
Another scientist repeats the experiment and gets the same results.
In science, it is important that experimental results can be verified.
- **Repeatability** refers to the ability of the *original experimenter* to get the same results when they repeat the experiment multiple times. It checks for random errors in their own procedure.
- **Reproducibility** is a stronger test. It means that *someone else*, in a different lab, possibly with different equipment, can follow the original method and produce the same results. This confirms that the result is not just a fluke or an artifact of the original setup. If results are reproducible, they are considered much more reliable and valid.
Common mistakes
✗ Confusing reproducible with repeatable. The key difference is whether it's the *same* scientist (repeatable) or a *different* scientist (reproducible).
Practice the full AQA GCSE Physics Foundation Tier Paper 1
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