From the category archives:

Kid Questions

Kid Questions: Why does my voice sound funny in the tunnel?

April 30, 2012 Energy and Change
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There is a spot in our school where the classrooms and verandahs make a little tunnel about 10m long. The kids all love the echoey sound and it’s common to see them popping in and out and giggling madly. The little girl noticed it the other day when we were walking through the school and [...]

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Kid Question: Why do we all have different voices?

March 26, 2012 Energy and Change
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Our voices work the same as an instrument like a saxophone. Air comes from our lungs then through our voicebox, or larynx, in our neck like the reed on the saxophone mouthpiece. Next it goes out through our mouth like the pipe of the saxophone. The sound depends on the shape of the instrument that [...]

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Kid Questions: Why do Fingers Wrinkle?

February 20, 2012 Kid Questions
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We’re swimming several times a week and the little girl is fascinated that she turns into a giant pink sultana. She has to check each finger and toe when we get out to see how wrinkly it is. So why do our fingers wrinkle? I grew up with the old explanation, but I did some [...]

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Kid Questions: Why do we see the lights after they are switched off?

December 5, 2011 Kid Questions
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If you stare at a light for about 30 seconds then turn it off or look away you will still see a light in front of your eyes. This is called an afterimage, or technically a positive afterimage. In the back of your eyes are lots of little cells called cones. When certain types of [...]

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Kid Questions: Do Frogs Have Lips?

November 7, 2011 Kid Questions
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The quick answer is ‘no,’ frogs don’t have lips. They have some very interesting features in their mouths, but lips like we have belong to monkeys, apes and us. Primate lips There are 5 types of large animals we’re most familiar with – fish, amphibians, reptiles, birds and mammals. Mammals have very different mouths to [...]

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Kid Questions: Do Sharks Have Tongues?

October 31, 2011 Kid Questions
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The answer to this one is yes and no. Land animal skeletons and tongues are very different to fish and sharks, with very different jobs. Land Animals Our tongues are full of muscles and covered with sensitive skin and lots of nerves. They are very mobile and help mammals eat and drink, move food around [...]

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Kid Questions: How do Bees Carry Pollen?

October 28, 2011 Kid Questions
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I discovered with this one that different types of bees carry pollen differently, there are two main ways. One important thing to remember is that in spite of what you may see in movies, most of the pollen collecting bees are girls and any pollen that is spread is by accident – the bees would [...]

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Kid Questions: Why do we use glass for mirrors and windows?

October 17, 2011 Activities
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At first this sounds really weird – we use glass for windows so we can see through it, but we also use glass for mirrors and we can see ourselves. Why does it act differently in different things? The answer is that it isn’t really the glass that makes the mirror. Good quality glass is [...]

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Kid Questions: What Makes Willy-willies?

October 11, 2011 Earth and Beyond
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Living where we do we get lots of willy-willies. They range from a few leaves swirling around on the ground to columns of dust and leaves that you can definitely feel. When I was in Halls Creek we used to call them ’30 second cyclones’ because they could be strong enough to knock over things [...]

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Kid Question: Why do balls bounce?

September 12, 2011 Energy and Change
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I suspect big girl was actually asking this to delay being kicked outside, because bouncing the little rubber ball down the hall was not going down well. But it’s a good question anyway, and like all good distractions it led to lots of other things to do. Bouncing balls is a fun one because kids can [...]

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