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36 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is science?
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A system of knowledge and methods used to find information beginning with curiosity and ends with discovery.
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Scientia
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What is technology?
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The use of knowledge to solve practical problems.
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Scientific Method
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An organized plan for gathering, organizing, and communicating information.
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Scientific hypothesis
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An educated guess or a reasonable explanation that can be tested by experiment.
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Scientific theory
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A well-tested explanation for a set of observations or experimental results.
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Example - Big Bang Theory
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Scientific law
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A general hypothesis that has been tested over and over again and has not been contradicted.
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Fact
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A phenomenon about which competent observers can agree.
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1st Step of the Scientific Method
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Make observations and ask questions.
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2nd Step of the Scientific Method
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Develop a hypothesis or a proposed answer to the question.
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3rd Step of the Scientific Method
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Test the hypothesis with an experiment.
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Manipulated variable
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Variable that causes a change in another.
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Responding variable
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Variable that changes in response to the manipulated variable.
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Controlled variable
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All other variables are kept constant or controlled.
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4th Step of the Scientific Method
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Analyze data and draw conclusions.
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5th Step of the Scientific Method
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Develop a scientific theory/ Arrive at a scientific law.
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SI Base Unit for length
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meter (m)
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SI Base Unit for mass
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kilogram (kg)
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SI Base Unit for temperature
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kelvin (K)
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SI Base Unit for time
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second (s)
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SI Base Unit for amount of substance
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mole (mol)
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SI Base Unit for electric current
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ampere (A)
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SI Base Unit for luminous intensity
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candela (cd)
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Mass
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A measurement of the quantity of matter in an object.
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Volume
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The amount of space occupied by an object.
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°F to °C
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°C=5/9(°F-32)
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°C to °F
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°F=9/5(°C) +32
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°C to K
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K=°C+273
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Precision
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How close together a group of measurements actually are to each other.
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Accuracy
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How close the measured value is to the true or accepted value.
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Random Error (Indetermediate Error)
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Measurement has an equal probability of being high or low.
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Systematic Error (Determinate Error)
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Occurs in the same direction each time (high or low), often resulting from poor technique
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Data tables
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Relate two variables:
Manipulative variable (ex. time) - x-axis Responding variable (ex. temperature) - y-axis |
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Line graphs
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Show changes that occur in related variables.
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Slope
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Rise/Run=(y₂-y₁)/ (x₂-x₁)
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Direct Proportion
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A relationship in which the ratio (x/y) of two variables is a constant.
As one variable (x) increases, the other variable (y) increases. |
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Indirect Proportion
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A relationship in which the product of two variables (x.y) is a constant.
As one variable (x) increases, the other variable (y) decreases. |
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