Page 179 - SK Year 5 Science DLP
P. 179
THE IMPORTANCE OF PREVENTING RUSTING
Rusting of objects made of iron brings many disadvantages.
Observe the situations below.
Situation 1
Mother, this sardine Let’s look for a sardine can that is
can is dented. not dented. The dented part of the
can may have rusted. Food that
are exposed to rust are unsafe to
be eaten.
Situation 2 This fence is rusty. Do we
need to repaint it?
Yes. This fence will look
much better. It will last
longer after being painted.
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