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Term | Definition |
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Scientific method | Organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis, analyzing data, and drawing conclusions. |
Hypothesis | Educated guess using what you know and what you observe. |
Experiment | Organized procedures for testing a hypothesis; test the effect of one thing on another under controlled conditions. |
Variable | Factor that can cause a change in the results of an experiment. |
Dependent variable | Factor that changes as a result of changes in the other variables. |
Independent variable | Factor that, as it changes, affects the measure of another variable. |
Constant | In an experiment, a variable that does not change when other variables change. |
Control | Standard used for comparison of test results in an experiment. |
Bias | Occurs when a scientist's expectations change how the results of an experiment are viewed. |
Model | Can be used to represent an idea, object, or event that is too big, too small, too complex of too dangerous to observe of test directly. |
Theory | Explanation of things or events that is based on knowledge gained from many observations and investigations. |
Scientific law | Statement about what happens in nature that seems to be true all the time; does not explain why or how something happens. |
Technology | Application of science to help people. |
Standard | Exact, agreed-upon quantity used for comparison. |
SI | International System of Units- the improved, universally accepted version of the metric system that is based on multiples of ten includes the meter (m), liter (L), and kilogram (kg). |
Volume | amount of space occupied by an object. |
Mass | amount of matter in an object. |
Density | Mass per unit volume of a material. |
Graph | Visual display of information or data that can provide a quick way to communicate a lot of information and allow scientists to observe patterns. |