Scientific Investigation-JA/8

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Last updated 5:16 PM on 8/31/26
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34 Terms

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Science

a method for studying the natural world by gaining knowledge through observations and investigations.

<p>a method for studying the natural world by gaining knowledge through observations and investigations.</p>
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Hypothesis

a testable answer/prediction to a scientific question, shows cause and effect

<p>a testable answer/prediction to a scientific question, shows cause and effect</p>
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Conclusion

summary of results

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Independent Variable

what is deliberately changed in an experiment (not changed by other variables)

<p>what is deliberately changed in an experiment (not changed by other variables)</p>
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Dependent Variable

variable that (depends on)changes because of the independent variable

<p>variable that (depends on)changes because of the independent variable</p>
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Control Group

the group that does not receive the experimental treatment.

<p>the group that does not receive the experimental treatment.</p>
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Experimental Group

the group in an experiment that receives the variable being tested

<p>the group in an experiment that receives the variable being tested</p>
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Analyze

to examine critically or carefully

<p>to examine critically or carefully</p>
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Reliable

trustworthy, proven

<p>trustworthy, proven</p>
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Constant

a variable that does not change

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Qualitative Data

descriptive information

<p>descriptive information</p>
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Quantitative Data

numerical information

<p>numerical information</p>
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Observation

to use senses to collect data

<p>to use senses to collect data</p>
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Law

description of how things happen in nature

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theory

explanation of why a natural phenomenon occurs based on many observations and investigations over time

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Conversion Factor

a ratio of equivalent measurements

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Beaker

used to hold liquids, measure volume , and stir liquids

<p>used to hold liquids, measure volume , and stir liquids</p>
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Graduated Cylinder

instrument used to measure precise volume of a liquid

<p>instrument used to measure precise volume of a liquid</p>
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Erlenmyer Flask

A narrow-mouthed container used to heat substances

<p>A narrow-mouthed container used to heat substances</p>
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Meniscus

Curved surface of liquid, read at bottom of curve

<p>Curved surface of liquid, read at bottom of curve</p>
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Hot Plate

An electrical device used to heat things up.

<p>An electrical device used to heat things up.</p>
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Bunsen Burner

Gas source used for heating

<p>Gas source used for heating</p>
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Accuracy

the degree to which the experimental result agrees with the accepted value (how correct it is)

<p>the degree to which the experimental result agrees with the accepted value (how correct it is)</p>
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Precision

the degree to which measurements agree with one another (consistency)

<p>the degree to which measurements agree with one another (consistency)</p>
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test tube

a thin glass tube used to hold small amounts of material for laboratory testing or experiments.

<p>a thin glass tube used to hold small amounts of material for laboratory testing or experiments.</p>
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watch glass

glass; used to cover an evaporating dish or beaker

<p>glass; used to cover an evaporating dish or beaker</p>
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mortar and pestle

used to grind up materials

<p>used to grind up materials</p>
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funnel

for pouring liquid or other substance through a small opening

<p>for pouring liquid or other substance through a small opening</p>
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pipette

used to transfer small amounts of liquid

<p>used to transfer small amounts of liquid</p>
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beaker tongs

for removing and holding a hot beaker

<p>for removing and holding a hot beaker</p>
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spatula

small scoop used to transfer powder and crystal chemicals

<p>small scoop used to transfer powder and crystal chemicals</p>
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digital scale

Measures mass (usually in grams)

<p>Measures mass (usually in grams)</p>
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Inference

A conclusion reached on the basis of evidence

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triple beam balance

instrument used to measure mass

<p>instrument used to measure mass</p>