Wednesday, November 23, 2016

The Puddle, the Deckchair and the Glass of Water...

I love it when the kids ask questions that show evidence of reasoning or leaps of imagination. Tess has been learning about the water cycle in Primary 2 and tonight she announced that she had a science question.

I like how she set the scene - Mummy, if you were in a deck chair, on a hot day, in a pretty dress, in the garden, blah blah.... (she often adds blah blah for dramatic effect)...

...and if you had a puddle on one side of you and a glass of water on a wee table at the other side, why would the, know (holds hands in the air) GONE at the end of the day, but not the glass of water?

I asked her if the teacher gave them that question, or  if she thought of it herself and she said 'myself.'

Well, I don't mind admitting, it took me until age 15 and a light bulb moment in 'O Grade' Physics  to understand the rudiments of heat transference. 

The exam questions asked what would happen if you put a hot saucepan on a metal surface. For the first time, I realised the heat would actually move, radiating outwards from one metal to the next. I almost shouted Eureka.

So tonight, with enthusiasm, I explained to Tess about surface to volume ratio and warm patios, wide puddles and deep glasses. She went off to sleep quite pleased with herself.

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