Question

5. This is not necessarily mentioned in the reading, but you should have learned this in Science class. What property of gold made Panning for Gold and Cradle Rocking an effective way to find gold?

It is dense and heavy


It is very light


It is a soft malleable metal


It conducts electricity


It is not magnetic

Answer 1

High density. It placer mining takes advantage of gold's high density, which causes it to sink more rapidly from moving water than the lighter siliceous materials with which it is found.