Originally published at: https://boingboing.net/2019/10/29/a-cloud-weighs-as-much-as-300.html
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Basically it is not very dense and spread out over a really big area. But there is much more to it as explained in the video.
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Those clouds don’t look like bunnies, they look like ducks!
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For a similar reason as why ships carrying a lot more than 300 cars don’t sink. They’re not denser than the stuff beneath them
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We could refine this explanation.
The ship itself – let’s say a mainly steel ship – is denser than water.
To float, the steel-dense hull must displace a volume of water having a mass exceeding the mass of the ship. (Assuming I understood the explanation correctly, which I took from an interview with a naval engineer on public radio some years ago.)
Update: special case, flying galleons or whatever you call the flying ship in Stardust (2007):
Update 2: The short answer to the question is: Because Scale.
Update 3: Water density varies with dissolved substances such as salts – and with undissolved substances such as gas bubbles … thus headlines such as “Could methane bubbles sink ships?” (Answer: yes, it could happen, but it does not commonly happen.)
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sir patrick moore tried to explain the weight of clouds
Keep your eyes on the road, people.
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great video. but she never explained how all my files are stored there? 
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I’m pretty sure clouds float because of orgone energy.
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Why doesn’t it fall on our heads?
Destiny.
Err, that’s not it…
Density!
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What is rain, hail, or snow then?
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People in the Pacific Northwest: “Wait, it doesn’t fall on our heads?”
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Short answer: Because science.
Long answer: Because science, bitches.
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I’ve looked at clouds from both sides now!
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