North Carolina Science Grade 8

Chapter 1: The Nature of Science and Technology

Evaluating Scientific Explanation

1.
How does a scientist confirm data?
A)by consulting with an expert in the field
B)by checking calculations for errors
C)by observing that repeating the experiment yields similar results
D)by making sure that technicians follow procedures properly
2.
What occurs when the expectations of a scientist change how the results of an experiment are viewed?
A)data
B)conclusion
C)bias
D)revision
3.
Which of the following increases the reliability of a scientific explanation?
A)repeatable data
B)vague statements
C)notes taken after an investigation
D)several likely explanations
4.
When a scientist describes an investigation, what should other scientists be able to do?
A)repeat the investigation without observing the results
B)repeat the investigation and get the same results
C)repeat the investigation without any other explanations
D)investigate further without evaluating the conclusions
5.
_______ is used to evaluate evidence.
A)Critical thinking
B)Bias
C)Technology
D)Data
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