Quantities and Units

Which is the correct unit for measuring distance?

• grams

• metres

• degrees celsius

I measure the mass of my dog, which is the correct way of writing down my measurement?

• dog = 18 kg

• kg = 18 m

• 18 mass

• m = 18 kg

Answer explanation

This is like a sentence converted into symbols:

mass (m)

is equal to (=)

18 kg (18 kilograms)

How many metres are there in 5 kilometres?

Answer explanation

kilo = 1000

1 kilometre = 1000 metres

5 kilometres = 5000 metres

Newtons are used to measure which quantity?

• Force

• Energy

• Speed

• Mass

Which is the unit for acceleration?

• m/s

50 cm is equal to how many metres?

Answer explanation

100 cm = 1 m

50 cm = 0.5 m