Where does rain come from?

1. 1

   Roo says

   Up in a grey cloud are lots of tiny drops of water, so tiny that they float. Inside the cloud, the drops bump into each other and join up into bigger drops. When a drop gets too heavy to float, down it falls. That's rain!

   For ages 4–7
   Hear Roo

   Checked against What is rain? (Met Office)

2. 2

   Why don't the tiny drops fall straight away?

   Cloud drops are so small that the air rising up inside the cloud holds them up. To fall, they have to bump and join again and again until they're heavy enough. It takes millions of tiny cloud drops to make just one raindrop!

   For ages 6–9
   Hear Roo

   Checked against Precipitation and the water cycle (USGS)

In Lil' Phil, reaching the bottom of this wonder earns a sticker for Roo's collection.

• 

  What are clouds made of?

  Ages 4–10Roo
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  Where do puddles go?

  Ages 4–11Roo
• 

  How is snow made?

  Ages 4–11Roo