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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 |