How does it rain?

wee thinking old scientistWell after our success with making a cloud we just had to think about why some clouds rained and why others didn’t?

So we conducted an experiment to investigate this.

 

We hypothesised it was about the quantity of water the cloud had soaked up, and recorded these in our science logbook.

Daniel recorded that he predicted clouds needed more water to make rain.
Daniel recorded that he predicted clouds needed more water to make rain.
Alex predicted that the cloud with less water would make rain.
Alex predicted that the cloud with less water would make rain.

So we set up our experiment….

We recorded our findings in our logbook.

Natalie recorded that the large cloud stayed the same when the little cloud let rain through
Natalie recorded that the large cloud stayed the same when the little cloud let rain through
Rebekah recorded the rain falling from the cloud.
Rebekah recorded the rain falling from the cloud.

wee science meSo clouds with lots of water are the ones that make rain. If a cloud only has a little water, it doesn’t. Lots of water is heavier than a little water so the water falls down when there is enough in the cloud to be heavy, but big clouds need more water to become too heavy and rain.

But we didn’t stop there. Chloe and Amelia wanted to see if they could speed things up by mixing the cloud (foam) and (water) air.

Thinking scientist That got us thinking about potions and mixing – what could we add to what? Would different things happen? Hmmmm.

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