Page 26 - York Global Science 6 - Physical Science

Will they float or sink?
Test the objects.

What can you decide about the density
of the different objects?

Explain why some objects float and
some objects sink.

Record what happened in the table
in the Workbook, then answer the
questions.

Step-By-Step

You can measure the density of a material
if you know the mass and the volume of the object.

1 Measure the mass in grams.
225 g

3
2 Measure the volume in cm using a ruler, or by
displacement.
volume = length × width × height

= 5 cm × 2 cm × 1 cm
= 10 cm 3 1 cm

5 cm 2 cm

volume = 10 ml

3
One millilitre (ml) of water has a volume of 1 cm .
Therefore, 10 ml of water has a volume of 10 cm .
3

70 ml 80 ml

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