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Introduction to Physics, Measurements, and Graphs

Introduction to Physics, Measurements, and Graphs

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Tags: science   physics   high school   graphs   hs-ps1-2   ngss   introduction   hs-ps1-1   measurements  

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Physics
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The branch of science concerned with the nature and properties of physical matter and energy.
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Dimensional Analysis
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A way of converting units of measurement by treating these units as algebraic quantities.
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Significant Units
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Each of the digits of a number that are used to express it to the required degree of accuracy.
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Scientific Method
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A procedural method characterized by observation, measurement, experimentation, and the use of a hypothesis.
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Hypothesis
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A possible explanation or educated guess that you can test through study and experimentation.
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Scientific Law
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A brief statement that describes some aspect of the universe and is based on repeated experimental observation.
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Measurement
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A value that consists of a number and a unit - this value can be compared to a standard.
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Accuracy
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The degree to which the result of a measurement conforms to the correct value or a standard.
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Precision
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An evaluation of how closely together a set of measurements are to one another.
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Independent Variable
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The variable whose value is changed during an experiment.
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Dependent Variable
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The variable whose value is measured during an experiment.
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Best Fit Line
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A line on a graph that is drawn as close as possible to all given data points on that graph.
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Linear Relationship
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A relationship between variables of direct proportionality that, when drawn on a graph, creates a straight line.
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Slope-Intercept Form
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A formula for describing linear graphs. The formula is defined by the equation: y = mx + b
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Slope
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A number that describes both the direction and the steepness of a line. It is defined by the equation: m=rise/run=∆y/∆x
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Quadratic Relationship
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A relationship between variables of squared proportionality that, when drawn on a graph, creates a curved or parabolic line.
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Inverse Relationship
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A relationship between variables in which an increase in one variable causes a decrease in the value of a second variable (and vise versa).
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