KA 1: scientific principles and process: scientific method Flashcards

1
Q

list the scientific cycle

OHEAEH

A
  • observation
  • construction of testable hypothesis
  • experimental design
  • gathering, recording and analysis of data
  • evaluation of results and conclusions
  • the formation of a revised hypothesis where necessary
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2
Q

in science…

A

refinement of ideas is the norm

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3
Q

what can scientific knowledge be thought of as?

A

the current best explanation, which may then be updated after evaluation of further experimental

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4
Q

what does the null hypothesis propose?

A

that there will be no statistically significant effect as a result of the experiment

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5
Q

what is a negative result, and is it a valid finding?

A

failure to find an effect

valid finding, as long as the experiment is well designed

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6
Q

how can conflicting data or conclusions be resolved?

A
  • careful evaluation
  • lead to further experimentation
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7
Q

when would a null hypothesis be rejected?

A

if there is evidence for an effect, unlikely due to chance

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8
Q

when do scientific ideas become accepted?

A

once they have been checked independently

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9
Q

effects must be…

A

reproducible; one-off results are treated with caution

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