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ps chapter 1
science
| Term | Definition |
|---|---|
| observing | using one or more senses to gather info |
| scientific law | statement that describes expectation under conditions |
| communicating | ideas through writing and speaking |
| inferring | making an inference |
| science | the study of the natural world |
| model | image, diagram, representation of an object |
| predicting | making a forecast based on experience |
| scientific theory | tested explanations for observations |
| chemistry | study of properties of matter and how the change |
| physics | study of matter, energy, motion, forces, how they interact |
| scientific inquiry | different ways to study the natural world |
| hypothesis | possible answer to scientific question |
| parameter | factor that can be measured in experiment |
| manipulated variable | purposely changed |
| responding variable | expected to change |
| controlled experiment | one parameter manipulated at a time |
| data | facts, figures observed |
| Graph | pic of data |
| horizontal axis | X |
| vertical axis | Y |
| origin | point where X and Y cross |
| coordinate | pair of #s position on graph |
| data point | point showing location of intersection |
| line of best fit | smooth line in general pattern |
| linear graph | data points in straight line |
| slope | steepness on graph line |
| non linear graphs | data points in non straight line |
| si | expanded metric system |
| weight | force of gravity on you |
| mass | measure of amount of mass in object |
| estimate | approx. number based on reasonable |
| accuracy | true or actual value |
| reducibility | closeness of groups measurments |
| significant figures | all digits exactly measured plus 1 digit |
| precision | exactness of measure |