Chapter 1: The Nature of Science
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37 Terms
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Accuracy
________: compares a measurement to the real or accepted value.
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Precision
________: describes how closely measurements are to each other and how carefully measurements were made.
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Scientific Method
________: organized set of investigation procedures that can include stating a problem, forming a hypothesis, researching and gathering information, testing a hypothesis, analyzing data, and drawing conclusions.
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Density
________: the mass per unit volume of a material.
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Standard
________: an exact quantity that people agree to use to compare measurements.
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Technology
________: the application of science to help people.
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Mass
________: a measurement of the quantity of matter in an object.
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Hypothesis
________: a possible solution or an explanation that is consistent with what is known.
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Conversion Factor
________: a ratio that is equal to one and is used to change one unit to another.
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Model
________: represents an idea, event, or object to help people better understand it.
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Line Graph
A(n) ________ can show any relationship where the dependent variable changes due to a change in the independent variable.
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Science
________ is a method of studying the natural world.
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Bias
________: occurs when what the scientist expects changes how the results are viewed.
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Volume
________: the amount of space occupied by an object.
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Graph
________: a visual display of information or data.
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Circle Graph
A(n) ________, or pie graph, is used to show how some fixed quantity is broken down into parts.
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Theory
________: an explanation of things or events based on knowledge gained from many observations and investigations.
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Variable
________: factor that can cause a change in the results of an experiment.
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Hypothesis
a possible solution or an explanation that is consistent with what is known
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Experiment
organized procedure for testing a hypothesis; tests the effect of one thing on another under controlled conditions
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Dependent Variable
factor that changes as a result of changes in the other variables
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Independent Variable
factor that, as it changes, affects the measure of another variable
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Constant
in an experiment, a variable that does not change when other variables change
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Control
standard used for comparison of test results in an experiment
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Model
represents an idea, event, or object to help people better understand it
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Theory
an explanation of things or events based on knowledge gained from many observations and investigations
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Scientific Law
a statement about what happens in nature and that seems to be true all the time
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Technology
the application of science to help people
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Standard
an exact quantity that people agree to use to compare measurements
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Precision
describes how closely measurements are to each other and how carefully measurements were made
31
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Accuracy
compares a measurement to the real or accepted value
32
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Conversion Factor
a ratio that is equal to one and is used to change one unit to another
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Volume
the amount of space occupied by an object
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Mass
a measurement of the quantity of matter in an object
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Density
the mass per unit volume of a material
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Derived Units
a unit obtained by combining different SI units
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Graph
a visual display of information or data