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Science Chapter 1

Chapter #1 Skills

QuestionAnswer
accuracy the closeness of a measurement to the true value of what is measured
astronomy the study of the universe beyond earth
3 types of variables controlled experiment, scientific law, controlled variable
scientific notation a system that makes very large or very small numbers easier to work with
bar graph when you use scaled bars to repreent varies measurements when you want to compare a set of simular data
biology the study of life and life processes
chemistry the study of the composition, structure, properties and reactions of matter
circle/pie graph using a divided circle with each slice representing a porportional fraction relates the part to the whole
controlled experiment only one variable is changed at a time
controlled variable everything has to be the same. The things that have to stay the same (study time, lighting)
conversion factor a ratio of equivalent measurements that is used to convert a quanity from one unit to another
density the ratio of a material's mass to its volume
density of water 1g/cm3
direct proportion relation of which the ratio of 2 variables is constant
geology the study of the origin, history, and structure of earth
hypothesis a proposed answer to a question
inverse proporation a relationship in which the product of 2 variables is a constant
length the straight line distance between 2 points (use meter stick)
line graph shows relationship of 2 variables, variable Y plotted VS variable X. shows how one variable responds to changes in the other variable
manipulated variable causes the change in another variable (indendpent variable)
Created by: Rosemarydby
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