Transcript Ch. 1

1 Outline
• measurement
• scientific method
• science & society
• Homework:
• Review Questions (RQ): 1, 10, 11, 13
• Exercises (Ex): 9
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measurement
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determination of value
units: , e.g. length, time, etc.
common units: meter, kilogram, second
SI system (system international)
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scientific method of inquiry
• Based on unbiased repeatable testing
(not personal authority)
• Method:
• Observe
• Hypothesize (guess why)
• Predict (consequences of hypothesis)
• Experiment (to test hypothesis)
• Theorize (form simplest general rule)
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scientific terminology
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phenomenon: an observable event
fact: objective verifiable observation
hypothesis: tentative explanation
theory: (next slide)
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scientific theory
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Simple in form
Testable (falsifiable)
Accurately predicts large # results
Not required to be perfect
Useful
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honesty in science
is a matter of public and self-interest.
misrepresentation or lying
leads to ostracization by the
scientific community
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summary
• measurements utilize units
• scientific method, a flexible and useful
instrument of inquiry
• scientists must conform to scientific
method and ethics
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