Why did my hot water bottle go cold?

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The weather has turned colder here and we have started giving the children hot water bottles to keep them warm in bed at night. For my 3-year-old, this is a new thing – she was pleased to have a snuggly warm toy to cuddle up to all through the night. But the next morning, when she woke up, she cried because her hot water bottle had gone cold!

So, why does a hot water bottle go cold overnight? Where does all the heat go?

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Do fish have ears?

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Fish are cold-blooded animals that live in water. Most fish have scales on their bodies, use gills to breathe and have fins instead of arms or legs or fingers or toes. And they range enormously in shape and size – from tiny seahorses to huge whale sharks!

But have you ever wondered if and how fish can hear? We have! So, let’s find out more about fish and how they sense the watery world around them…

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How do they land a rocket?

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Rockets are vehicles that can be used for travelling in Space. They are tube-shaped and use fuel to produce a super-strong blast of hot gas that pushes them forward or upwards. Rockets can move really, really fast through the air and into outer Space – whoosh! But have you ever thought about how they stop? My friend’s little boy has and he wants to know how do rockets land? So, let’s find out…!

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How do astronauts do their hair (and go to the loo) in space?

Moon Day 12
Moon Day 12

Have you ever looked up at the night sky and wondered what it would be like to travel into space? Nearly 50 years ago, Neil Armstrong became the first person to walk on the Moon and there are astronauts in space right now, living and working on the International Space Station.

A few weeks ago, my 2-year-old asked me to give her ‘astronaut hair’ for pre-school. I just swizzled her hair up into a pair of twisty buns (a bit like Topsy’s hair in Topsy and Tim) but I spent the rest of the day wondering, how do astronauts wash and comb their hair in space?

So, let’s find out more about life on the International Space Station…

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How is light made?

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Light is all around us. The Sun shines on the Earth every day and we use electric lights or candles to light our homes, schools and workplaces. We use torches or streetlights when we are out and about at night and build fires for light and warmth when we go camping. Even in the middle of the night, there is some light from the stars in the sky.

But one of my daughter’s schoolfriends asked me how light is made. And her brilliant question made me think about natural and man-made light sources.

So, let’s find out more about light – what it is and how it is made…

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