What’s that noise?

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My younger daughter asks this question all the time. She only recently learnt how to ask ‘what’s that noise?’ and has become very fond of asking it! So, I thought this would be a great opportunity to talk how sounds are made and how we hear them.

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Which is stronger – an elephant or a diplodocus?

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This question came from one of the teachers at my daughter’s school, who was asking on behalf of her son.

Since I couldn’t do an experiment to figure out which is stronger (because I don’t have an elephant and dinosaurs became extinct millions of years ago), I had to find out lots of facts about both kinds of animal and try to work out their relative size and strength.

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