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34 Cards in this Set
- Front
- Back
What is science?
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the search for facts about the world around us
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Pure Science
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search for a better understanding of the world; curious scientists
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Applied Science
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practical application of scientific discoveries; scientists who put discoveries to work
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Scientific Method
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the way a scientist solves a problem
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What are the steps in the Scientific Method?
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State a problem; Collecting observations or data; Searching for scientific laws; Form a hypothesis; Forming theories; Modifying theories
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Controlled Experiments
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experiments were only one variable is changed at a time
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How do Scientists make sense of their data?
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graphs; practice
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Direct Graph
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1 goes up; the other goes up
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Inverse Graph
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1 goes up; 1 goes down
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Quantity
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a term for things that can be measured; length, mass, time, etc.
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SI Unit for length
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meter m
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SI Unit for mass
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kilogram kg
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SI Unit for time
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second s
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SI Unit for amount of substance
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mole mol
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SI Unit for temperature
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Kelvin K
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SI Unit for electric current
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Ampere A
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SI Unit for luminous intensity
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candela cd
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SI Unit for energy
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Joule J
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SI derived unit for volume
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cubic meter m³
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SI derived unit for speed
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meter/second m/s
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SI derived unit for force
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Newton kg·m/s²
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Accuracy
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getting close to the actual target
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Precision
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getting the same value over and over again
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Significant Figures
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the digits in a measurement that are known to certainty and one digit that is uncertain.
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How many sig figs in 3.00?
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3
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How many sig figs in 20?
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1
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How many sig figs in 0.004?
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1
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How many sig figs in 400000.0254000?
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13
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When you multiply or divide the number with the ___ number of sig figs detaermines the number of sig figs in the answer.
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least
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SI derived unit for area
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square meter m²
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When adding and subtracting line up decimals and round off at the number farthest ot the ___ under a full column.
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right
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Percent Error
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how far off your answer is from the actual answer
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Observed Value/Measured Value
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value obtained through experimentation
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True Value/Actual Value/Accepted Value
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value that's most probable based on many experiments and tests
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