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ExplorCreaw/Phyics
11th grade, "Exploring Creation with Physics" Module 1
| Question | Answer |
|---|---|
| Vector quantity | a physical measurement that contains directional information |
| Scalar quantity | A physical measurement that does not contain directional information |
| Definition of Displacement | a change in an object's position |
| Definition of position | Where an object is located |
| Definition of acceleration | how is the motion changing; the time rate of change of an object's velocity; M/SEC^2 |
| System Internationale | SI; the standard units of fundamental quantities in science. |
| Factor-label method | a method to convert measurements from one unit to another |
| accuracy | how close a measurement is to the actual, exact value |
| Definition of Precision | The consistency reproducibility of a measurement and is closely related to a measurement's uncertainty. |
| Significant figures | a non-zero; it is a zero that is between two significant figures; it is a zero at the end of the number and to the right of the decimal point |
| addition and subtracting with significant figures | round your answer so that it has the same precision as the least precise measurement in the equation |
| multiplying and dividing with significant figures | round the answer so that it has the same number of significant figures as the measurement with the fewest significant figures |
| Definition of velocity | the time rate of change of an object's position; how quickly an object's position is changing |
| Definition of Speed | the time rate of change of the distance traveled by an object |
| Why velocity is relative | because everyone who observes a velocity is at a different stand point |
| relativity | how something looks to you compared to someone else's view |
| the slope of a position-versus-time curve is | the velocity |
| instantaneous velocity | the velocity of an object at one moment in time |
| average velocity | the velocity of an object over an extended period of time |
| what kind of graphs are studied to learn about acceleration? | velocity versus time graph |
| the slope of a velocity versus time graph is | the acceleration |
| what kind of graphs are studied to learn about velocity? | position versus time graph |
| the slope of a position versus time graph is | the velocity |
| the velocity and acceleration have the same sign, the object is | speeding up |
| the velocity and acceleration have opposite signs, the object is | slowing down |
| acceleration is zero when | the curve in a graph is flat |
| if velocity is zero | acceleration could or could not be zero |
| if acceleration is zero | the velocity could or could not be zero |
| how to determine the velocity of an object relative to another | take the velocity of the thing being observed and subtract it from the velocity of the observer |
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