Phy. Sci. - Ch. 1 Introduction
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Created by:
orlathomas Plus on July 10, 2011
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18 terms
Terms | Definitions |
|---|---|
 Scientific method | is an organized set of steps that can include stating a problem, forming a hypothesis, researching, analyzing data and drawing conclusions |
| Hypothesis | an educated guess using what you know and what you observe |
| Experiment | A set of controlled observations that test the hypothesis |
| Variable | a factor that can cause change in the results of an experiment |
| Constant | variable that is not changed in an experiment |
| Bias | occurs when a scientist's expectations change how the results of an experiment are viewed |
| Control | is the standard that is used for comparison of test results in an experiment |
| Independent variable | is the variable that the scientist plans to change in the experiment or the factor that affects the measure of other variables |
| Dependent variable | variable that changes as a result of a change in the independent variable |
| Model | can be used to represent an idea, object, or event that is too big, too small, too complex, or too dangerous to observe or test directly |
| Theory | explanation of things or events based on many observations and experiments |
| Scientific law | a statement about what happens in nature and that seems to be true all the time |
| Technology | the application of science to help people |
| SI | is the universally accepted version of the metric system that is based on multiples of ten |
| Volume | The amount of space occupied by an object |
| Mass | the amount of matter in an object |
| Density | is the mass per unit volume of a material |
| Graph | a visual display of information or data that can provide s quick way to communicate information |
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