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Physical Science Ch1

Science the knowledge obtained by observing natural events and conditions in order to discover facts and formulate laws or principles that can be verified or tested.
Technology the application of science for practical purposes
Scientific Law a summary of many experimental results and observations; a law tells how things work
Scientific Theory An explanation for some phenomenon that is based on observation, experimentation, and reasoning
Scientific Method A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing hypothesis, and stating conclusions.
Variable A factor that changes in an experiment in order to test a hypothesis (manipulated variable)
Length A measure of the straight-line distance between two points
Volume A measure of the size of a body of region in three-dimensional space
Mass A measure of the amount of matter in an object
Weight A measure of the gravitational force exerted on an object
Scientific Notation A method of expressing a quantity as a number multiplied by 10 to the appropriate power
Precision The exactness of a measurement
Accuracy A description of how close a measurement is to the true value of the quantity measured
Qualitative statement A statement that uses words to provide a description.
Quantitative statement A statement that uses mathematical quantities/equations to provide a description.
Created by: hod01003