# Section 1.2 Main Ideas

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The order of steps in a scientific method can vary. Most scientific methods to solving a problem, however, include defining the problem, stating a hypothesis, testing the hypothesis, analyzing the results of the test, and drawing conclusions.

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Variables are factors that change in an experiment. A dependent variable can change in response to changes in the independent variable. A control is a standard for comparison.

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Basic units used in SI include the liter, the meter, the second, the kilogram, the Newton, and degrees Celsius.

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In scientific notation, a number is expressed as a multiplier and a power of 10.

Section 1.2 Study Guide