Direct Relationship, As X increases Y increases, Indirect Relationship, As X increases Y decreases, No Relationship, As X increases Y remains the same, Cyclic Relationship, As X increases Y repeats, Independent Variable, What you control, goes on X axis, Dependent Variable , What you measure, goes on Y axis, Range, change in Y, Wavelength , distance from crest to crest or trough to trough, Crest , top of a wavelength, Trough , bottom of a wavelength, Frequency, number of time a wavelength repeats in a given time, High Frequency, short wavelength, many wavelengths is a small area, Low Frequency , long wavelength, few wavelengths in an area, Origin, Point of rest between crest and trough (halfway), Ampiltude, Distance from rest to crest or trough, Observation , description of the environment using any of the five senses, Inference, A conclusion based on observations, Find data not measured , Intersect the line on your graph and go across to find the unknown, Patterns & Trends, Are easier to see after making graphs, Units, Numbers in science must have these.

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