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Unit 1 Vocab

Unit 1: Language of Physics

TermDefinition
accuracy how close a measurement is to the correct value for that measurement
base unit standard for expressing the measurement of a base quantity within a particular system of units; defined by a particular procedure used to measure the corresponding base quantity
Scientific Theory Explains why or how something happens; supported by evidence
Scientific Law a statement describing what always happens under certain conditions. They are accepted to be true and universal.
Hypothesis a testable explanation about something based on prior knowledge and observations
Predict A guess about what might happen based on observation and inference
Reliability how consistently a method measures something
Validity how accurately a method measures what it is intended to measure
Experimental Design a set of procedures that are designed to test a hypothesis
Engineering Design a series of steps to follow to come up with a solution to a problem
Independent variable a quantity that stands alone and isn't changed by the other variables. The horizontal, or x-axis, variable
Dependent variable a quantity that is affected by the independent variable. The vertical, or y-axis, variable.
Control variable a quantity kept the same in an experiment
Conclusion a decision that is formed with evidence; summary of information
constant a quantity that does not change
derived units units that are derived by combining the fundamental physical units
fundamental physical units the seven fundamental physical units in the SI system of units are length, mass, time, electric current, temperature, amount of a substance, and luminous intensity
physics science aimed at describing the fundamental aspects of our universe—energy, matter, space, motion, and time
precision how well repeated measurements generate the same or closely similar results
science the study or knowledge of how the physical world operates, based on objective evidence determined through observation and experimentation
Created by: sstoeb
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