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Apologia Gen Mod 3

Apologia General Science Module 3 Analyzing & Interpreting Experiments

Experimental variable An aspect of an experiment that changes during the course of the experiment
Control (of an experiment) The variable or part of the experiment to which all others will be compared
Blind experiments Experiments in which the participants do not know whether or not they are a part of the control group
Double-blind experiments Experiments in which neither the participants nor the people analyzing the results know who is in the control group
Why can a needle float on water? surface tension
What does soap do to the surface of water? Reduces the surface tension of water
True or False? Saltwater is more dense than pure water. True
surface tension Can be thought of as a thin film that stretches across the surface of every liquid
subjective data the data being collected depends to some extent on the opinions of people
objective data There is no way opinion can affect the experimental results.
pain threshold Some people can experience a lot of pain and barely notice it, while others can experience just a little pain and be miserable.
x-axis the horizontal scale on a graph
y-axis the vertical scale on a graph
placeboes fake pills
Created by: nmaeser on 2007-09-26

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