WS 1A Physical Quantities & SI Units

A physical quantity is a quantity that can be measured and consists of a

• numerical magnitude

• unit

• base quantity

• derived quantity

The SI unit of length is the kilometre.

• True

• False

Answer explanation

It is the Metre

The SI unit of time is the second.

• True

• False

Answer explanation

It is the Metre

The SI unit of area is the square centimetre.

• True

• False

Answer explanation

It is the "Square Metre"

The SI unit of mass is the kilogram.

• True

• False

Answer explanation

It is the Metre

The SI unit of volume is the litre.

• True

• False

Answer explanation

It is the "Cubic Metre"

Which of the following are base quantities?

• length

• time

• temperature

• time

Which of the following are derived quantities?

• current

• speed

• density

• volume

What is the factor for the prefix "nano (n)"?

What is the symbol for the prefix "kilo"?

• kg

• Kg

• k

• K