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SELMAN, CHAPTER 2
Standard Units
VOCAB | DEFINITION |
---|---|
PHYSICS | branch of science which deals with matter, energy, and their relation to each other |
RAD PHYSICS | physics that pertains to the origin, nature, and behavior of x-rays and related types of radiation |
SCIENCE | organized and classified knowledge |
FUNDAMENTAL UNITS | length, mass, time |
ANGSTROM | how wavelenghts are measured |
KILOMETER | 1000 meters = 3/5 mile |
INCH | 2.54 cm |
MASS | the quantity of matter in a body |
WEIGHT | the force with which the earth attracts the body at some given location |
KILOGRAM | the weight of standard piece of platinum-iridium |
TIME | a measure of the duration of events |
SECOND | standard unit of time, defined as 1/86,400 of a mean solar day |
AREA | the measure of a given surface |
VOLUME | a measure of the capacity of a container |
DENSITY | the mass per unit volume of a substance |
VELOCITY | speed in a given direction |
TEMPERATURE | a measure of the avg energy of motion of the molecules of matter |
CELSIUS CONVERSION | C = 5/9 (F-32) |
FAHRENHEIT CONVERSION | F = 9/5 C + 32 |