physical quantity

Physical quantity

SI units

LengthMass

Time

TemperatureElectrical current

What is length?What is length?

Distance between two Distance between two pointspoints

Length

Common units used for measuring Common units used for measuring lengthlength

1 mm = __________cm = _________m = 1 mm = __________cm = _________m = _______km_______km

______mm = 1 cm = ______m = ______km______mm = 1 cm = ______m = ______km ______mm = ______cm = 1 m = ______km______mm = ______cm = 1 m = ______km ______mm = ______cm = _______m = 1 km______mm = ______cm = _______m = 1 km

Common units used for measuring Common units used for measuring lengthlength

1 mm = 0.1 cm = 1 x 101 mm = 0.1 cm = 1 x 10-1-1= 0.001m = 1 = 0.001m = 1 x 10x 10-3-3 = 0.000001 km = 1 x 10 = 0.000001 km = 1 x 10-6-6

10 mm = 1 cm = 0.1 m = 0.0001 km10 mm = 1 cm = 0.1 m = 0.0001 km 1000 mm =100 cm = 1 m = 0.001 km1000 mm =100 cm = 1 m = 0.001 km 100000 mm = 1 x 10100000 mm = 1 x 1055 = 10000 cm = 1 = 10000 cm = 1

x 10x 1044 = 1000 m = 1 km = 1000 m = 1 km

Temperature

Electric current

Physical quantities

DERIVATIVES UNITSDERIVATIVES UNITS

AREAAREA

total surface of an objecttotal surface of an object For regular surface like square – can be For regular surface like square – can be

calculated by using formulae.calculated by using formulae. For irregular shape like leaves – estimate by For irregular shape like leaves – estimate by

using graph paper.using graph paper.

complete boxes + equal to half or more complete boxes + equal to half or more than half ≠ areathan half ≠ area

Calculate you palm by using a 1cmCalculate you palm by using a 1cm22 grid line. grid line.

VOLUMEVOLUME

Space occupied by an object / total space of an Space occupied by an object / total space of an object.object.

Unit in cubic meter mUnit in cubic meter m33

Using formulae for regular solid objectsUsing formulae for regular solid objects Measuring cylinder, burette, pipette and Measuring cylinder, burette, pipette and

measuring flask.measuring flask. Eyes – same level – bottom of the meniscus ( oil, Eyes – same level – bottom of the meniscus ( oil,

water, alcohol) / top of the meniscus (mercury)water, alcohol) / top of the meniscus (mercury) Irregular shaped solid – water displacement Irregular shaped solid – water displacement

method.method.

Prefixes

Prefix Symbol Numerical value

Giga G 1 000 000 000

Mega M 1 000 000Kilo k 1 000

Prefixes


Deci d 0.1Centi c 0.01Milli m 0.001


Micro µ 0.000 001Nano n 0.000 000

001Piko p 0.000 000

000 001

Question :

Answer :

Question :

Answer

physical quantity

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