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40 Cards in this Set
- Front
- Back
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Quantities in physics, such as mass, volume, and speed, which are fully described by magnitude alone
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scalar
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The horizonal axis on a graph on which the independent variable is plotted.
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x-axis
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A vector quantity which describes the rate at which an object changes its position. Also referred to as "speed with direction."
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velocity
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A scalar quantity which refers to "how much ground an object has covered" during its motion.
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distance
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The rate at which an object changes its velocity, meaning there is a change in speed, direction, or both.
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acceleration
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A point, assumed to be stationary, used to describe motion.
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frame of reference
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Refers to the duration of an action.
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time
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The vertical axis on a graph on which the dependent variable is plotted.
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y-axis
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A scalar quantity which refers to "how fast an object is moving."
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speed
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Refers to the way position changes relative to a starting point. May be indicated by the terms: north, south, positive, negative, up, or down.
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direction
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A vector quanity which refers to how far out of place an object is, or the object's change in position.
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displacement
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A quantity that has magnitude and direction.
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vector
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Refers to where an object is.
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position
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The degree of exactness with which an operation is performed or a measurement stated.
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precision
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Freedom from mistake or error; degree of conformity of a measure to a standard or a true value.
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accuracy
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The accepted measurement system of the scientific community, based on the meter, the kilogram, and the second.
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SI/metric
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Standar system of measurement used in daily activities in the United States.
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USCS
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The speed of an object at a specific moment.
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instantaneous speed
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The factor in an experiment that the researcher chooses to vary at specific intervals; is plotted on the x-axis.
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independent variable
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The total distance traveled divided by the total time of travel.
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average speed
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Refers to the degree of inclination or steepness of a line.
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slope
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The factor whose value changes a the result of a change in the independent variable and is plotted on the y-axis.
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dependent variable
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Refers to size and is expressed as a numerical value.
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magnitude
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Total displacement divided by the time interval.
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average velocity
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The velocity of an object at a specific moment.
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instantaneous velocity
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Type of motion that describes an object that is not accelerating.
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constant velocity
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A speed that does not change, such as a steady speed.
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constant speed
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Acceleration of an object a particular moment.
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instantaneous acceleration
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Type of motion that describes the steady change in velocity over time.
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constant velocity
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A simplified description of a physical system intended to capture the essential aspects of the system in a sufficiently simple form.
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model
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An assumption to be tested; a statement of a problem to be solved, expressed as a question.
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hypothesis
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A plausible or scientifically acceptable general principle or body of principles offered to explain phenomena.
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theory
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A specific measure of quantity (as of length, time, heat or value) used as a standard of measurement.
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unit
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An act of recognizing and noting a fact or occurrence; often involving measurement with instruments.
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observation
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An operation carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law.
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experiment
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A statement of an order or relation of phenomena that so far as is known is invariable under the given conditions.
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law
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Set up and established by authority as a rule for the measure of quanity, weight, extent, value or quality.
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standard
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Used to check, test or verify experiemnts; usually not itself manipulated during the experiment.
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control
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Something invariable or unchanging.
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constant
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A falling object which experiences no friction is in this type of motion and accelerates at a rate of 9.8 m/s2.
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freefall
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