# Units of Measurement, Length and Mass, Temp. Volume, Density, Derived Units, Graphing

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### metric system

the units used for scientific measurements

### SI units

base units for the metric system

### kilogram

base unit for mass

### meter

base unit for length

### second

base unit for time

### kelvin

base unit for temperature

### mole

base unit for amount of substance

### ampere

base unit for electric current

### candela

base unit for luminous intensity

kilogram abb.

meter abb.

second abb.

kelvin abb.

mole abb.

ampere abb.

candela abb.

### giga

biggest level of units

### femto

lowest level units

G stands for

M stands for

k stands for

d stands for

c stands for

m stands for

### micro

fancy u stands for

n stands for

p stands for

f stands for

10 power of 9

10 power of 6

10 power of 3

10 power of -1

10 power of -2

10 power of -3

10 power of -6

10 power of -9

10 power of -12

10 power of -15

### mass

measure of the amount of material in an object

### temperature

a measure of the hottness or coldness of an object;

### celcius or kelvin

common temperature scales used

### celcius

scale used everyday in most countries

### volume of a cube

determined by its length cubed

### m cubed

si unit for volume

### density

a property of matter that is widely used to characterize a substance

### density formula

mass divided by volume

### grams per cubic centimeters

solids and liquids are measure in

### temperature dependent

densities are dependent on this

### exact numbers

those whose values are known exactly; defined values

### inexact numbers

those whose values have some uncertainty

### dimensional analysis

used to convert one quantity to another

### derived unit

a unit that is defined by a combination of base units

### independent variable

the variable that is changed during an experiment

### dependent variable

the variable that is changed due to an experiment

x axis

y axis

### extrapolate

reading a graph beyond the limits of the experimentally determined points

### graph

circle, bar, line

rise over run

Example: