Science standards of measurements

what is the unit and symbol for length?

meter ; m

what is the unit and symbol for mass?

gram ; g

what is the unit and symbol for time?

second ; s

what is the unit and symbol for electric current?

ampere ; A

what is the unit and symbol for temperature?

kelvin ; k

what is the unit and symbol for amount of substance?

mole ; mol

what is the unit and symbol for intensity of light?

candela ; cd

what is the symbol and ratio of kilo?

k ; 1:1000

what is the symbol and ratio of deci?

d ; 10:1

what is the symbol and ratio of centi?

c ; 100:1

what is the symbol and ratio of milli?

m ; 1000:1

what is the symbol and ratio of micro?

u ; 100,000:1

what is the symbol and ratio for nano?

n ; 100,000,000:1

what is Mass?

the amount of matter in a object

what is Density?

mass per unit volume of a material

what is Time?

the interval between two occurring events

International system of Units

standard system of measurement used worldwide

Graph

a visual display of information or data.

purpose: to quickly and easily illustrate data

Line graph

show trends or how the data changes overtime and is used to show value changes and effect of one variable on another

where is time always graphed?

x-axis (independent variable)

Bar graph

chart divided up into sections by rectangular bars with lengths proportional to the values the bars represent

what are bar graphs used to show?

to show comparisons, quantities, and/or amounts

when are bar graphs used

used when no connection between data points

what are line graphs used to show?

to show value changes and effect of one variable on another

what are the two types of bar graphs?

horizontal; vertical

what is a circle graph (pie chart) used for?

used to show how a fixed quantity is broken down into parts; circular chart divided into section; or proportions, best when data is shown as percents

when can you use a circle graph?

when the total count is known

Extrapolate

extend data beyond measured data

Interpolate

predict data between two measured points

Correlation

how data changes together