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8 Cards in this Set

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What is Physical Sceience?
Is the study of chemistry, atronomy, physics, and earth science.
Density
equals mass/volume
Hypothesis
a tentative explanation (educated guess)
Independent variable (manipulated variable)
variable changed by the experimenter. It is placed on the x-axis.
Dependent variable (responding variable)
variable that responds to the change in the independent variable. It is placed on the y-axis.
Constant
kept the same throughout the experiment. (not changed)
Control
used for comparative purposes
An experiment was performed to determine the effect of length on a pendulum. For each length, the period was determined. the amplitude and the mass were kept the same in each experiment. the results were as follows:
Length Period
10 cm 0.63s
20 cm 0.90s
30 cm 1.10s
40 cm 1.27s