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Stratus clouds – A blanket of cloud – Weather science

By |2017-08-20T18:32:08+00:00August 20th, 2017|Physics|

Stratus clouds (thanks to NASA) 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 is cold. They look like a huge gray blanket that hangs low in the sky. Sometimes stratus clouds are on the ground or very near the ground, [...]

What is snow? Weather – Earth science

By |2018-04-24T14:32:37+00:00August 20th, 2017|Physics|

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 time since then, the Earth has been warm enough that it didn't snow at all. But from time to time, the Earth becomes cooler, entering [...]

Why does it rain? Weather – Earth science

By |2017-08-20T18:07:53+00:00August 20th, 2017|Physics|

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, and water just hung in the air as steam without falling as rain. Then as the Earth's surface began to cool, in the Archaean era, huge clouds formed and began [...]

Nimbus clouds – Rain clouds – Weather

By |2018-11-09T06:53:08+00:00August 20th, 2017|Physics|

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 the swimming pool! What causes thunderstorms? Other kinds of clouds More about weather Nimbus is a fancy word, but it really just means [...]

Why is the sky blue? A science project

By |2017-08-20T14:53:06+00:00August 20th, 2017|Physics|

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 blue in 1859. Fill a drinking glass with water, and then add two spoonfuls of milk - almond milk is okay if you are dairy-free [...]

Rain project – Weather science

By |2018-05-31T11:49:18+00:00August 20th, 2017|Physics|

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 of carbon from burning gas, or other pollutants. Because people drive more on weekdays than on weekends, there is more and more pollution [...]

Steam clouds projects – Weather science

By |2018-05-31T11:49:31+00:00August 20th, 2017|Physics|

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 the stove to boil (make sure this is okay with your folks). When the steam comes out, it makes a white cloud - that's the [...]

Cumulus clouds – Weather – Science

By |2018-05-28T23:34:03+00:00August 20th, 2017|History|

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 our word "accumulate" meaning to pile up. They are puffy clouds. (What are clouds made of?) Sometimes cumulus clouds are white and there [...]

What are clouds made of? Weather science

By |2018-10-02T08:11:31+00:00August 20th, 2017|History|

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 the land on Earth, it can carry tiny drops of water up into the sky. These drops are too small for you to see. [...]

Cirrus clouds – Weather science

By |2018-09-23T18:11:36+00:00August 19th, 2017|Physics|

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 someone pulled a bigger cloud apart into little bits of cloud. Different types of clouds All about weather Why do cirrus clouds look wispy? Cirrus [...]