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Chapter 3 Flashcards > Chapter 3 > Flashcards

Chapter 3 Flashcards

0
Q

dimensions

A

measurable properties of matter and energy

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1
Q

measurement

A

comparision of a dimension of an object

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2
Q

instrument

A

artificial device made for the purpose of refining, or substituting for the human senses when measuring

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3
Q

unit

A

segment of a dimension assigned a value of 1

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4
Q

calibrated scale

A

series of markings related to the dimensional unit of an instrument

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5
Q

standard

A

known quantity that everyone agrees will be used for comparsion when measuring

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6
Q

metric system

A

system of measurement in which all units of a given dimension are related to each other by powers of 10

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7
Q

SI

A

stands for systéme international dúnites; global metric system

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8
Q

conversion factor

A

any factor used to convert from one unit of measure to another

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9
Q

error

A

the arithmetric difference between a measured value and the actual value of the dimension

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10
Q

accuracy

A

evalution of the measurement error

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11
Q

precision

A

evalution of how exactly a measurement is made

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12
Q

significant digit

A

digit in a measurement used to communicate the precision of a measurement

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13
Q

weight

A

measure of the earth’s gravity acting on the matter in an object

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14
Q

spring scale

A

laboratory instrument that measures weight by balancing the pull of the earth’s gravity

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15
Q

electronic scale

A

laboratory instrument that measures weight by converting the pull of gravity on an object

16
Q

electronic balance

A

electric instrument that measures the weight of an object and then displays its equivalent mass

17
Q

volume

A

the space enclosed or occupied by an object

18
Q

meniscus

A

the cursed surface of a liquid in a container with a narrow neck

19
Q

density

A

amount of matter or the mass of the substance contained in a specific volumetric unit

20
Q

balance

A

simple instrument that compares a known mass to an unknown mass using a lever arm

21
Q

scientific notation

A

convenient way to express very large or small numbers

Chapter 3 Flashcards (9 decks)

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