Stratus clouds (thanks to NASA) What are stratus clouds? If you see stratus clouds, that's the time to get inside and stay there. Stratus clouds mean rain if it is warm and snow if it [...]
If it's colder, rain may fall as snow. About two and a half billion years ago, the Earth finally cooled down enough for it to snow for the first time. Most of the [...]
Thanks to Rocbike for the great picture! When the Earth first formed, about 4.5 billion years ago, it didn't rain here. Until about four billion years ago, Earth was too hot for raindrops to form, [...]
Cumulonimbus clouds are a type of nimbus cloud What is a nimbus cloud? Nimbus clouds often mean that a thunder storm is brewing: there may soon be thunder and lightning. Get out of [...]
A cloudy glass of water You can see for yourself that blue light scatters more than red light. This is the same way that John Tyndall showed why the sky was [...]
People driving cars in the rain Some of the tiny particles inside the clouds - the cloud seeds - are made of pollution from cars and factories. They're little particles [...]
See the steam coming out of this kettle? You can make your own clouds and see how they work. Just take a tea kettle and fill it full of water and put it on [...]
These are cumulus clouds. They are puffy. What is a cumulus cloud? Cumulus clouds are clouds that are piled up on top of each other. "Cumulus" means a pile in Latin, as in [...]
Clouds in the sky. What are clouds? Clouds are made of water What are clouds? Clouds are made of drops of water or ice. When the wind picks up water from the ocean or from [...]
Cirrus clouds in a blue sky What cirrus clouds look like Most of the time, you see cirrus clouds very high up in the sky, looking thin and wispy, like [...]
