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Physics

ACT Look at the measuring containers below, which all have DID YOU KNOW?
different graduated scales. What is the division value of each one?
What is the limit of measurement in each one? State the amount Centuries ago, the volume
of liquid in each container. of liquids was measured
in barrels. The barrel could
contain 10 buckets; one
bucket = 10 cups; one cup =
textbooks nis edu kz
200 10 wine glasses. In the late
18th century, the volume of
150 liquids was measured using
bottles. The volume measures
100 for liquids that are familiar to
200
us nowadays – litre, decilitre,
150 50
100 100 cubic metre and cubic
50 centimetre – were introduced
in 1916.

Liquids have a definite volume but not a definite shape. They
take the shape of whatever vessel they are being contained in.

Gases have a constant volume. They occupy (take up) the whole volume
of whatever vessel they are being contained in.

REMEMBER! According to the International System of Units (SI),
3
volume is measured in cubic metres (m ).

INV In daily life we often deal with objects of irregular shape, such as
stones or potatoes. Think about what you have learnt about mass and
volume of solids and liquids. How do you think you could find out the
volume of irregular-shaped objects using a measuring cylinder and
a known amount of water? Discuss in your groups, then establish a
procedure and attempt it.

OVER TO YOU!

2
1. A jar is filled with 3 glasses of milk 3. A swimmer dives into a pool measuring 12 m .
containing 150 ml each. What is the volume
a) How much will the water level increase if the
of milk poured into the jar in dm , l, and ml?
3
3
volume of the swimmer’s body is 60 dm ?
2. Water fills half of an aquarium measuring
b) How many swimmers can fit in the pool without
5 dm high, 70 cm long and 0.4 m wide.
any water overflowing, if the water level is 1.8 m
Calculate:
and the depth is 2 m?
a) the volume of the aquarium
4. How could you measure the volume of a thin sheet
b) the volume of the water of paper? What about the volume of a paper clip?

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