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    Variables

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    CLark Romero
    Variables are factors that can be controlled or measured in a scientific experiment. There are several types of variables including independent variables, which are the conditions that are changed; dependent variables, which are measured and depend on the independent variables; controlled variables, which stay constant; and extraneous variables, which are unintended influences. For example, in an experiment on how temperature affects solubility, temperature would be the independent variable, solubility the dependent variable, and controlled variables could include the water source and container sizes.

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    Variables

    Uploaded by

    CLark Romero
    193 views1 page
    Variables are factors that can be controlled or measured in a scientific experiment. There are several types of variables including independent variables, which are the conditions that are changed; dependent variables, which are measured and depend on the independent variables; controlled variables, which stay constant; and extraneous variables, which are unintended influences. For example, in an experiment on how temperature affects solubility, temperature would be the independent variable, solubility the dependent variable, and controlled variables could include the water source and container sizes.

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    Variables are factors that can be controlled or measured in a scientific experiment. There are several types of variables including independent variables, which are the conditions that are changed; dependent variables, which are measured and depend on the independent variables; controlled variables, which stay constant; and extraneous variables, which are unintended influences. For example, in an experiment on how temperature affects solubility, temperature would be the independent variable, solubility the dependent variable, and controlled variables could include the water source and container sizes.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    193 views1 page

    Variables

    Uploaded by

    CLark Romero
    Variables are factors that can be controlled or measured in a scientific experiment. There are several types of variables including independent variables, which are the conditions that are changed; dependent variables, which are measured and depend on the independent variables; controlled variables, which stay constant; and extraneous variables, which are unintended influences. For example, in an experiment on how temperature affects solubility, temperature would be the independent variable, solubility the dependent variable, and controlled variables could include the water source and container sizes.

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    © All Rights Reserved
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    Download as docx, pdf, or txt
    of 1

    Variables are an important part of science projects and experiments. What is a variable?

    Basically, a
    variable is any factor that can be controlled, changed, or measured in an experiment. Scientific experiments
    have several types of variables. The independent and dependent variables are the ones usually plotted on a
    chart or graph.
    Types of Variables
    Independent Variable- The independent variable is the one condition that you change in an experiment.
    Example: !n an experiment measuring the effect of temperature on solubility, the independent variable is
    temperature.
    Dependent Variable "The dependent variable is the variable that you measure or observe. The dependent
    variable gets its name because it is the factor that is dependent on the state of the independent variable
    .Example: !n the experiment measuring the effect of temperature on solubility, solubility #ould be the
    dependent variable.
    *Controlled Variable "$ controlled variable or constant variable is a variable that does not change during
    an experiment.
    Example% !n the experiment measuring the effect of temperature on solubility, controlled variable could
    include the source of #ater used in the experiment, the si&e and type of containers used to mix
    chemicals, and the amount of mixing time allo#ed for each solution.
    *Extraneous Variables "'xtraneous variables are (extra( variables that may influence the outcome of an
    experiment, but aren)t ta*en into account during measurement. !deally, these variables #on)t impact the
    final conclusion dra#n by the experiment, but they may introduce error into scientific results. !f you are
    a#are of any extraneous variables, you should enter them in your lab noteboo*. 'xamples of extraneous
    variables include accidents, factors you either can)t control or can)t measure, or factors you consider
    unimportant. 'very experiment has extraneous variables.
    Example% +ou are conducting an experiment to see #hich paper airplane design flies longest. +ou may
    consider the color of the paper to be an extraneous variable. +ou note in your lab boo* that different colors
    of papers #ere used. !deally, this variable does not affect your outcome.
    The independent variable in an experiment is the variable that +,- change in order to affect the
    dependent variable. The dependent variable is #hat is being measured, or #hat is being affected.
    .or example, !f you are testing ho# the amount of time you leave a sponge in a bo#l of #ater affects the
    amount of #ater absorbed, then the amount of time you leave the sponge in is the independent variable, and
    the amount of #ater absorbed is the dependent variable. $n easy #ay to remember it is that the dependent
    variable all /'0'1/S on the independent variable.
    $ hypothesis is an educated guess about the outcome of an experiment before the experiment is performed.
    The most common format for a hypothesis is% !f... 2state the experiment you #ill be performing here3...
    then... 2state the result you thin* #ill come of the experiment3... because... 2support #hy you thin* this #ill
    occur3.

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