Margaret goes on holiday to the seaside. She notices some iron
railings on the beach that are...
Margaret goes on holiday to the seaside. She notices some iron
railings on the beach that are often in contact with the seawater.
They are very rusty. The iron railings in front of her hotel, some
distance from the sea, are much less rusty.
Margaret predicts that seawater makes iron rust faster thân rai
water.
Design an investigation to test Margaret's prediction.
Answers: 3
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