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chapter 4

terms and definitions

Hypothesis testable statement
Theory a broad generalization that explains a body of facts or phenomena
Derived unit combinations of Si base units form these
Density the ratio of mass to volume, or mass divided by volume
Accuracy the closeness of measurements to the correct or accepted value of the quantity measured
Direct Proportion when two quantity are equal to the others accepted value
Precision refers to the closeness of a set of measurements of the same quantity made in the same way
Model explains how a phenomena occurs and how data or events are realated
SI the single measurement system that all scientists agreed on is called Le Systeme International d'Unites abbreviated SI
quantity something that has magnitude, size, or amount
system a specific portion of matter given region of space that has been selected for study during the experiment or observation
conversion factor the ratio derived from the equality between two different units that can be used to convert from one unit to the other
weight a measure of the gravitational pull on matter
volume the amount of space occupied by an object
Created by: 522828