Dad, why is this beach stony when our beach is all sandy?

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A listener from Poole in Dorset e-mailed me this week to find an answer to the question his five-year-had posed to him over the weekend.

Could my listeners help? During a trip to Portsmouth to go up the Spinnaker Tower and then to watch the hovercraft come in at Southsea, the boy asked: ‘Dad, why is our beach all sandy and theirs is all stony?’

Great question and one which brought a flood of complicated but correct answers.

But how do you explain this in a simple way to a five-year-old?

So to get said listener out of what was a tricky situation, we suggested this reply: ‘Would you like an ice cream son?’