1.1 Physical quantities

Find the correct scientific notation for 0.00000089 mm

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Define physical quantity

• Quantities that cannot be defined in term of other physical quantities

• Quantities derived from combination of base quantities through multiplication or division or both.

• Quantity that cannot be measured

• Quantity that can be measured

By using prefixes, we can write 335 × 10^-8 s as

• 0.335 µs

• 3.35 µs

• 33.5 µ

• 335 µs

What is the volume of Object X?

• 10.0 cm³

• 15.0 cm³

• 25.0 cm³

• 20.0 cm³

What is the volume of the object?

• 15ml

• 14ml

• 13ml

• 20ml

1 Kg = _________gram.

• 10,000

• 10

• 1,000

• 100

For measuring 'Time', which device is used?

• Clock, watch

• Thermometer

• Ammeter

• All of the above

For measuring 'Height/length', which device is used?

• Speedometer

• Measuring tape/ ruler

• Weighing machine

• All of the above

For measuring 'Volume of liquids', which device is used?

• Watch

• Measuring Cylinder

• Speedometer

• Ruler

A value and a __________are used to express magnitude of a physical quantity.

• Numeral

• Symbol

• Direction

• Unit