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SELMAN, CHAPTER 2

Standard Units

VOCABDEFINITION
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
Created by: ladyhope819
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