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Mass
Activity 4: The gram
Do you know what is the mass of a paper clip?
To measure the mass of an object which is less than 1 kg,
we use a smaller unit.
One smaller unit is the gram. The symbol for gram is g.
You can use a scale to verify that:
1 kilogram contains 1000 grams (g).
1 kg = 1000 g
1000 g
1 kg
The mass of a paper clip is 1 g.
Try these
1. Draw a needle on the scale and record the correct mass in grams.
400 g
5 kg
Mass: _______ kg
Mass: _______ g
(c)
(b)
100 g
200 g
Mass: _______ g
(d)
0100
200
300
400
500
600
700
800
900
01
2
3
4
5
6
7
8
9kg
0100
200
300
400
500
600
700
800
900
Mass: _______ kg
(a)
01
2
3
4
5
6
7
8
9kg
2 kg