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Physical Science Ch1
Term | Definition |
---|---|
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. |