Why is the sky blue? Weather science
Blue sky with cirrus clouds This is an easy question to ask but the answer is pretty hard. The light that comes from the Sun to Earth looks white, but really it is made [...]
Blue sky with cirrus clouds This is an easy question to ask but the answer is pretty hard. The light that comes from the Sun to Earth looks white, but really it is made [...]
A tornado wrecked a town in northern France When there's wind coming from more than one direction at the same time, sometimes the air begins to spin around in one place. This [...]
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 bolt of lightning in the sky Hot air and cold air are constantly moving around the Earth, as the hot air rises and the cold air sinks - that's what [...]
A thunderstorm in South Africa The weather on Earth happens because of the evaporation and condensation of water, and because of the spinning of the earth and the tilt of the earth on its axis. Does it [...]
A hurricane in Cuba - Hurricanes happen near the equator What is a hurricane? A hurricane (also called a typhoon or a cyclone) is basically a huge spinning wind. Okay, then [...]
Hot air balloon - hot air rising is what causes wind Hot air is lighter than cold air When something is hot, its molecules are farther apart than when it is cold. When air [...]