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PS chapter 1
PS 1
| Term | Definition |
|---|---|
| Science | The study of the natural world. |
| observing | Using one or more senses to gather information. |
| inferring | guessing based on what you already know |
| Predicting | Making a forecast based in past experience |
| Chemistry | Matter's property and changes |
| Physics | interactions of matter, energy, motion, forces. |
| Scientific Inquiry | different ways they study the world |
| Hypothesis | possible answer to a scientific question |
| parameter | factor the can be measured |
| manipulated variable | purposely changed |
| responding variable | expected to change |
| controlled experiment | only one variable is manipulated at a time |
| Data | facts,figures, and other evidence |
| communicating | sharing ideas and conclusions |
| model | picture,diagram, to use as visual |
| scientific theory | well tested experiment |
| scientific laws | what scientists expect to happen |
| SI | Expanded metric system |
| weight | the measurement of the forces of gravity on you. |
| Mass | Amount of matter an object contains |
| estimate | approximation of a number when it can't exactly be obtained |
| accuracy | how close an approximation is to the true value |
| significant figures | measurement that includes all the digits that have been estimated |
| precision | the exactness of a measurement |
| reproducibility | how close a group of measurements are to each other |
| graph | picture of your data |
| horizontal axis | x-axis, runs left to right |
| vertical axis | y-axis, runs up and down |
| origin | where the 2 axis cross |
| coordinate | numbers to determine the position of the graph |
| data point | point showing the location of a position on a graph |
| line of the best fits | smooth line that reflects the pattern |
| linear graph | data points has a straight line |
| slope | the steepness of the graph line |
| non-linear graph | data points that aren't in a straight line |