Science

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flashcardsss
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56507
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Science
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2010-12-17 18:12:25
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  1. independent variable
    • in an experiment, the factor that is deliberately manipulated
    • what the scientist changes in the experiment
  2. dependent variable
    • in an experiment, the factor that changes as a result of manipulation of one or more other factors (the independent variables)
    • what you measure in the experiment
  3. control group
    in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor
  4. metric system
    • kilo
    • hecto
    • deka
    • deci
    • centi
    • milli
  5. meter
    the basic unit of length(symbol, m)
  6. liter
    the basic unit if volume
  7. gram
    the basic unit of weight
  8. mass
    a measure of the amount of matter in an object
  9. weight
    a measure of the gravitational force exerted on an object
  10. scientific notation
    • a method of expressing a quantity as a number multiplied by 10 to the appropriate power
    • example. 24327 = 2.4327 x 104
  11. standard notation
    543 any normal number
  12. Coefficient
  13. base
  14. exponent
  15. Signifigant digits
    • 3023(4)
    • 3000(1)
    • 3.000(4)
    • 40000.0(6)
    • 0.0002(1)
  16. DRY MIX
    • D = dependent variable
    • R = responding variable
    • Y-axis

    • M = manipulated variable
    • I = independent variable
    • X-axis
  17. science
    the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested
  18. Scientific Method
    • 1. Identify the problem or question
    • 2. Make an observation(do research)
    • 3. Write your hypothesis
    • 4. Design and conduct a experiment
    • 5. Collect and analyze the dada
    • 6. Write a conclusion
    • 7. Communicate results
  19. Characteristic Properties
    • properties that are always the same whether the sample observed is large or small
    • (density,reactivity,flamability)
  20. inference
    a conclusion that is based on facts but that is not the direct and absolute result of those facts
  21. Qualitative Data
    • Deals with descriptions.
    • Data can be observed but not measured.
    • Colors, textures, smells, tastes, appearance, beauty, etc.
    • Qualitative → Quality
  22. Quantitative Data
    • Deals with numbers.
    • Data which can be measured.
    • Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.
    • Quantitative → Quantity

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