| A | B |
|---|
| Bar Graph | shows information collected by counting. |
| Pie (Circle) Graph | Shows quantities broken into parts, usually percentages |
| Line Graph | shows trends in data; relates 2 variables |
| independent variable | the factor adjusted by the experimenter based on need and resources; graphed on x-axis |
| dependent variable | the factor being tested in an experiment; graphed on y-axis |
| appropriate interval | range of values divided by number of available spaces; round to even multiple |
| best fit line | used to graph data that is already known to have a relationship; drawn through middle of data points |
| interpolation | interpretation within the range of the data group |
| extrapolation | interpretation outside the range of the data group |
| position | location in space and time |
| motion | change in position |
| reference point | used to help determine an object's position; both arbitrary and staionary |
| arbitrary | based on your own opinion or personal choice |
| stationary | not moving |
| displacement | "net" change in an object's position; ignores path taken by object and just looks at difference between its original position and its new one |
| distance | measurement of the entire path of motion of an object |
| speed | rate of motion (change in positon) |
| formula for (average) speed | total distance covered divided by total elapsed time |
| instantaneous speed | speed at a specific moment in time |
| constant speed | speed that does not vary over time |
| velocity | speed + direction |
| graph of constant speed/velocity | diagonal line on distance vs. time graph |
| graph of zero speed/velocity | horizontal line on distance vs. time graph |
| acceleration | change in velocity over time (speed OR direction) |
| positive acceleration | "speeding up" |
| negative acceleration | "slowing down;" also called deceleration |
| formula for acceleration | (final velocity - initial velocity) divided by time spent making this change in velocitychange |
| graph of positive acceleration | positive sloping diagonal line or curve |
| graph of constant acceleration | diagonal line |
| graph of negative acceleration | negative sloping diagonal line or curve |
| graph of zero acceleration | horizontal line on velocity vs. time graph |
| finding speed from a graph | slope (y/x) of a position (or distance) vs. time graph |
| finding acceleration from a graph | slope (y/x) of speed/velocity vs. time graph |
| strong relationship on a graph | steep slope |
