17 terms

science ch2 sect 1@2@3

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measurment
is a way to describe the world with numbers
estimation
an estimation can help you make a rough measurement of an object
precision
a discription of how close measurements are to each other
accuracy
when you compare a measurement to the real, actual, or accepted value,
SI
designed to provide a worldwide standard of phisical measurment for science
meter
is the SI unit of length
volume
the amount of space an object occupies is its volume
mass
an object measures the amount of matter in the object
kilogram
is the SI unit for mass
weight
is a measurment of force The SI unit for weight is the newton
kelvin
temperature is measured in the SI with the kelvin
rate
is the amount of change of one measurement in a given amount of time
table
displays information in rows and columns so that it is easy eaisier to read and understand
graph
is used to collect data , organize, and summarize data in a visual way
line graph
shows the relationship between two variables
bar graph
uses rectangular blocks or bars of varying sizes to show the relationships among variables
circle graph
shows parts of a whole