Crazy Colours

Crazy Colours. A spectacular effect with the minimum or resources and effort! Children love this experiment but do get them to ‘predict’ what they think will happen before adding the soap. Then at the end ask them to think ‘why’ it happened. There is a video giving a simple explanation for them to watch on my channel. It’s called ‘Crazy Colours’ and it is in the FUN SCIENCE playlist. The Jumblefun Channel

I used UHT semi-skimmed milk. A further experiment could be to see if anything different happens when you use full fat or skimmed milk. For a rainbow effect use red, blue and yellow. The soap can be applied by a brush as shown in the video or by finger or cotton wool bud.

Why does it happen?

Although milk is mainly water it does contain lots of other things like vitamins and protein and fat.

Fats and protein are very sensitive to changes in the milk. When soap is added it sends the fat molecules crazy and they all start to twist and turn. During these acrobatics the colour molecules get pushed around so creating the crazy patterns.

Watch the very short video demo below. Have fun!

LINK TO SHORT VIDEO DEMONSTRATION

Learning about Rain. Art meets Science

Make a rainy day fun by finding out more about rain.

What is rain? What shape do raindrops make in puddles? Why do wet pebbles look shiny?

There are so many questions to find the answers to and so many art and craft projects to continue the theme and explorations.

Follow the link below and watch the short video with your child. Then start to look, to listen, to investigate.

It’s Raining. Art meets Science

Simple answers to those difficult questions:

What is rain?

Rain falls from clouds. Clouds are made from lots and lots of tiny water droplets. These droplets move around and bump into each other They stick together into clumps that get bigger and heavier. Eventually they get so big and heavy they can’t float any more and they fall to the ground as rain.

Why are wet stones and pebbles shiny and darker than dry ones?

The water coats the stone giving it a smooth surface. Light reflects off this surface just like it does in a lake or in the sea.

What shape do raindrops make on puddles?

Rain drops make concentric circles. That is one circle inside another. You can illustrate this by putting a very small plate on a slightly larger one and that on top of a larger one still.

Why do raindrops stay on top of leaves?

Leaves are covered with a kind of waxy coat. Some leaves are more waxy than others. This makes them waterproof and so the raindrops stay on the surface..

Why do raindrops on a window always go down and never up?

its all to do with the pull of gravity. Gravity is like a great big magnet pulling everything down towards the ground. Without gravity we would float in the air and so would all the cars and buses! When raindrops land on the window they are pulled downwards by gravity. As they travel down the window they bump into other drops and be one heavier. The heavier they become the faster they move.,

For related art and craft projects please see the previous two posts. Or search for raindrops and Concentric circles.