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chapter 1.1-1.5
vocabulary words
| Term | Definition |
|---|---|
| science | study of the natural world |
| observing | using one or more senses to gather info |
| inferring | explaining observations |
| predicting | making a forecast of the future based on the past |
| chemistry | study of properties of matter |
| physics | study of matter of energy and how it interacts |
| scientific inquiry | different ways scientists study the natural world |
| hypothesis | possible answer to a scientific question |
| parameter | factor that is measured in an experiment |
| manipulated variable | variable that is purposely changed |
| responding variable | variable changed by the manipulated variable |
| controlled experiment | experiment with only one manipulated variable |
| data | facts gathered in an experiment |
| communicating | sharing ideas with others |
| model | picture or diagram of a process |
| scientific theory | well tested explanations for a wide range of experimental results |
| scientific law | statement that describes what scientists expect every time |
| SI | International System of Units (French acronym) |
| weight | measure of force of gravity on you |
| mass | amount of matter an object contains |
| volume | amount of space an object takes up |
| meniscus | curve on liquid in a graduated cylinder |
| estimate | approximation of number based on reasonable assumptions |
| accuracy | how close to true value |
| reproducibility | how close group is to each other |
| significant figures | all digits measured exactly and 1 estimated digit |
| precision | measure of exactness |
| graph | picture of data |
| horizontal axis | x axis, run |
| vertical axis | y axis, rise |
| origin | where the two axes meet |
| coordinate | pair of numbers that determine position the position on a graph |
| data point | point showing location of an intersection |
| line of best fit | smooth line that reflects pattern |
| linear graph | line graph which data points yield a straight line |
| slope | steepness of graph line |
| nonlinear graph | data points don't fall on a straight line |