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### 34 Cards in this Set

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