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Ch 1 Science Skills
Vocabulary Review
Term | Definition |
---|---|
precision | Gauge of how exact a measurement is |
significant figure | All the digits of a measurement, plus the last which is estimated |
controlled experiment | Experiment with only one manipulated variable |
thermometer | Instrument to measure temperature |
hypothesis | proposed answer to a question |
conversion factor | Ratio of equivalent measurements that is used to convert a quantity from one unit to another |
direct proportion | relationship between 2 variables that their ratio is constant |
scientific law | statement that summarizes a pattern found in nature |
length | straight line distance between 2 points |
responding variable | variable that changes in response to a change in the manipulated variable |
scientific notation | way of expressing a number as the product of a number between 1-10 and a power of 10 |
scientific theory | well tested explanation for a set of observations or experimental results |
observation | information obtained by the senses |
inverse proportion | relationship in which one variable increases while the 2nd variable decreases |
mass | the amount of matter in an object |
volume | the amount of space on object occupies |
accuracy | closeness of a measurement to the true value of what is measured |
density | ratio of a material's mass to its volume |
slope | the steepness of a line |
chemistry | study of composition, structure, properties, and reactions of matter |
physics | study of matter and energy, and the interactions between the 2 through forces and motion |
manipulated variable | variable that causes a change in another variable |