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PS Chapter 1
| Term | Definition |
|---|---|
| Science | The study of the natural world. |
| Observing | Using 1 more senses to gather info. |
| Inferring | Guessing based on reasoning from what you already know. |
| Predicting | Making a forecast based on past experience or evidence. |
| Chemistry | Study of matter & how it changes. |
| Physics | Study of matter energy motion forces & their interactions. |
| Scientific Inquiry | Different ways scientists study the natural world. |
| Hypothesis | A possible answer to a scientific question or explanation for a set of observations. |
| Parameter | Factor that can be measured in an experiment. |
| Manipulated Variable | One Variable parameter scientists change. |
| Responding Variable | Variable parameter that is expected to change because of the manipulated variable. |
| Controlled Experiment | Experiment which only a parameter is manipulated at a time. |
| Data | Facts. |
| Communicating | Sharing ideas. |
| Model | Is a picture or a representation of an object or process. |
| Scientific Theory | Is a well tested explanation for wide range of observations or experimental results. |
| Scientific Law | Is a statement that describes what scientists expect to happen. |
| SI | International System of Units. |
| Weight | Is a measure of force of gravity on you. |
| Mass | is a measure of the amount of matter an object contains. |
| Estimate | Is an approximation of a number based on reasonable assumptions. |
| Accuracy | refers to how close a measurement is to the true or actual value. |
| Reproducibility | refers to how close a group of measurements are to each other. |
| Significant Figures | in a measurement include all digits. |
| Precision | is a measure of the exactness. |
| Graph | Picture of data |
| Horizontal axis | left to right |
| vertical axis | up and down |
| origin | two axis cross |
| coordinate | pair of numbers used to determine position |
| data point | point showing the location of intersection |
| line of best fit | smooth line that reflects pattern |
| linear graph | data points yielding a state line |
| slope | steepness of graph |
| nonlinear graph | a line graph were data points are not in a straight line |