How do you make a lolly stick race across water? Would you believe me if I told you all you needed was a drop of washing-up liquid ( dish soap ) and some water to do a fun surface tension experiment? Racing lolly sticks – surface tension experiment You’ll need Water A large container –…
This was my first attempt at making a cotton reel car, and it didn’t work quite as well as I hoped and definitely didn’t look as good as I wanted, but a cotton reel car is a great little engineering project with lots of possibilities. How to Make a Cotton Reel Car I tied the elastic…
Today the lovely Maggy is visiting from Red Ted Art with a great activity to introduce the idea of aerodynamics and trajectory to your children. How wonderful to be visiting from Red Ted Art today! It is no secret that I LOVE Science Sparks and all that these wonderful ladies have to offer us. I loved…
Coin poppers are a brilliant experiment to demonstrate air pressure! What you need A small empty plastic drink bottle A 2p coin A small square of kitchen roll Method 1. Put the empty bottle in the freezer for about an hour to cool. 2. Cut a small square of tissue paper and put it on…
This week we are investigating why balls bounce and how different balls bounce differently on different surfaces. Balls bouncing seems like a simple concept, but the science behind it is quite complicated, so please bear in mind that we have simplified it for our audience. I asked the children to choose three balls of different…
Cars, trucks, helicopters and buses are all loved toys in this house, but we don’t have a Hovercraft. Hovercrafts are really interesting as they move on top of a layer of air. The layer of air reduces friction and allows the hovercraft to move quickly over land and sea. So we decided to make one…or…
Elasticity is the ability of an object to return to its original shape after being subjected to a force ( for example, being stretched, pulled, squashed or twisted ). Elastic objects bounce back to their original shape very quickly! What is elastic distortion? Elastic distortion is when an object returns to its original shape when…
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