Etiqueta: EI 5 anys

You might think that you can’t fit many drops of water on the surface of a penny. Pennies are just so small! In the Drops on a Penny experiment, though, we’ve investigated surface tension and cohesion at their finest. How many drops of water can fit? There’s only one way to find out… by adding one drop at a time and counting! – Have a look at the outcome!

We put a paper clip on the edge of another paper clip and lowered it gently into a bowl of water.
It didn’t sink because surface tension held it afloat. That’s why so many insects are able to walk on water.

Does an orange float or sink in water? We began by filling a large bowl of water and placing an orange in the water. The K5 kids discovered that the orange floats. Then we peeled the orange, removing the rind. Next we placed the unpeeled orange in the water and guess what? It started to sink!
The rind of an orange is full of tiny air pockets making it float on the surface!

In Science K5 we have learnt that blue and yellow make green and red and yellow make orange. We have also seen what colours make purple! Today we have used coloured ice cubes to get the same results. Look at the outcome!