Dependent And Independent Variables Test Questions – Flashcards
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variables
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used in math and science; something that CAN be changed
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constant
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something that CANNOT change
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manipulate/independent variable
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one factor changed by the person doing the experiment; "manipulated variable"
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response/dependent variable
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factors being measured in an experiment; changes in response to the changes in the independent/manipulated variable; also known as the "response variable"
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constants
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factors that stay the SAME in an experiment
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What does a scientist do after she manipulates (changes) the manipulated (independent) variable?
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observes
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Where is the manipulated/independent variable usually plotted?
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On the X-axis of a graph
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response/dependent variable
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dependent variable; responds to changes in other variables in the experiment; the factor being measured in an experiment (what is observed AFTER the experiment)
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manipulated/independent variable
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independent variable; the one factor that is changed by the person doing the experiment (what we know before the experiment)
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Where is the dependent/response variable usually plotted?
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On the Y-axis of a graph
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controlled variables
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quantities that a scientist wants to remain the same (constant); must be observed as CAREFULLY as the response variables
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Experimental Scientific Method
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a set of scientific processes that scientists use to answer questions and solves problems in the world around them (cause/effect relationships)
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Experiment
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an investigation designed to find out how variables affect outcomes or results
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Variable
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anything that can change in an experiment that might affect the outcome
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Controlled Experiment
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an experiment in which ONE variable is changed and the outcome is compared to a standard (control)
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Standard or Control
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the basic procedure used in a controlled experiment, before changing any of the variables
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Hypothesis
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an educated guess/prediction based on information and experience
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Data
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pieces of information collected in an experiment/investigation
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Repeated Trials
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Experimental tests done more than once.
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Conclusions
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a statement that describes what an experiment/investigation showed, based on observations and data
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Two-Coordinate Graph
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shows the outcome of a series of experiments when a variable is changed by increment (steps)
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X-axis
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the horizontal axis on a graph (independent/manipulated variable)
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Y-axis
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the vertical axis on a graph (dependent/response variable)
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Pendulum
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a mass hung from a fixed point, free to swing back and forth when put into motion (grandfather clock, swing)
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Cycle
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any motion of an object that periodically repeats (example: one full swing of the pendulum=one cycle)
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Mean or Average
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usual; typical; MIDDLE
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System
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a set of parts that are related in some way and work together (a part can be isolated in a controlled experiment)
