physical quantities & measurement techniques Flashcards

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1
Q

calibrated

A

should agree closely w/ a standard or agrees when a correction has been applied

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2
Q

precise

A

when several readings are close together when measuring same value

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3
Q

to measure curved lines/ circumference of cylindrical object

A

lay a thread along the line

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4
Q

meniscus

A
  • curved upper surface of liquid
  • caused by surface tension
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5
Q

units of length

A

1 decimetre = 0.1 m
1 millimetre = 0.001 m
1 micrometre = 0.000 001 m

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6
Q

units of volume

A

1 cubic centimetre = 0.000 001 m^3
1 cubic decimetre = 0.001 m^3

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7
Q

analogue clock

A
  • has hands
  • only measure time to nearest sec
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8
Q

digital clock

A
  • displays numbers
  • records time to a precision of at least one hundredth of a sec
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9
Q

for measuring time taken for a rapidly moving object to move between 2 points…

A

light gate connected to an electronic gate

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10
Q

oscillation

A

a repetitive motion or vibration

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11
Q

period

A

time it takes for an object to return to its original position

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