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Physics A Terms
Term | Definition |
---|---|
Model | A replica or description designed to show the structure of workings of an object, system, or concept |
System | A set of items or interaction considered a distinct physical entity for the purpose of study |
Accuracy | Describes how close a measured value is to the true value of the quantity measured |
Precision | Refers to the degree of exactness with which a measurement is made and stated |
Significant figures | Those digits in a measurement that are known with certainty plus the first digit that is uncertain |
atto- | Is the prefix for 10^ -18 Has the abbreviation "a" |
femto- | Is the prefix for 10^ -15 Has the abbreviation "f" |
pico- | Is the prefix for 10^ -12 Has the abbreviation "p" |
nano- | Is the prefix for 10^ -9 Has the abbreviation "n" |
micro- | Is the prefix for 10^ -6 It's abbreviation is the Greek letter mu, pronounced mew |
milli- | Is the prefix for 10^ -3 Has the abbreviation "m" |
centi- | Is the prefix for 10^ -2 Has the abbreviation "c" |
deci- | Is the prefix for 10^ -1 Has the abbreviation "d" |
deka- | Is the prefix for 10^1 Has the abbreviation "da" |
kilo- | Is the prefix for 10^3 Has the abbreviation "k" |
mega- | Is the prefix for 10^6 Has the abbreviation "M" |
giga- | Is the prefix for 10^9 Has the abbreviation "G" |
tera- | Is the prefix for 10^12 Has the abbreviation "T" |
peta- | Is the prefix for 10^15 Has the abbreviation "P" |
exa- | Is the prefix for 10^18 Has the abbreviation "E" |
meter | the unit measure for length according to SI standards |
kilogram | the unit measure for mass according to SI standards |
second | the unit measure for time according to SI standards |
Delta | Greek letter used to describe the "difference" or "change in" |
Sigma | Greek letter used to describe the "sum" or "total" |
Dimensional analysis | Makes use of the fact that dimensions can be treated as algebraic quantities |
One-dimensional motion | Linear motion; motion in a straight line |
Frame of reference | Coordinate system to describe the precise position in space |
Displacement | Change in position (deltaX, deltaY) in direct straight line between start and end points |
Distance | Total way traveled |