I think this is supposed to mean that the carbon trees are built out of comes from CO2 in the atmosphere, not from dirt in the ground. So trees are “made from air” in the same way cake is made from flour.
Exactly. A tree is nearly all made from the elements in the air and water. Some tiny amount of a tree’s weight comes from substances taken from the earth.
It is tad different from a cake made from flour, more like how the flour is made of air and water just like trees.
I’m sure Dopers know these. But, in my experience most people do not-
If you removed all the water from Earth’s surface you would be left with a sphere as smooth as a billiard ball. The difference between the top of Mount Everest (highest pointt on the surface) and the bottom of the Marianas trench (lowest point of the surface) is a very tiny fraction of Earth’s diameter.
Jupiter is made up almost entirely of gas and liquid.
The entry point from the Atlantic into the Panama Canal lies west of the Pacific entry point.
Right. Due to the figure S shape of the Isthmus of Panama.
The entire canal system is supplied with water from a rainfall filled artificial lake created in the middle of the isthmus. Most of the travel distance by boat across the isthmus is the passage across Lake Gatun.
No! Don’t take a bite of Jupiter thinking it’s a creamy nougat!
Sources differ between the ones saying “we don’t yet know,” “it seems to be fuzzy at the edges” and “it’s probably solid.”
Barack Obama is 1/4 as old as the United States of America.
Also, the locks on the Panama Canal weren’t built to avoid a great flooding catastrophe, as my fifth grade teacher taught us. They were used, along with Lake Gatun, to limit how deeply the canal had to be dug.
Add fire and you have covered all four elements.
Or,none, when it is over…
I suppose that it’s conceivable that a submarine’s hull might be much less capable of withstanding a positive internal relative pressure than a negative internal relative pressure… but we’re still looking at a mere one atmosphere pressure difference, for a structure that’s designed to handle pressure differences of hundreds of atmospheres. I’d be very surprised if a sub transported to vacuum were to explode.
And Nancy Pelosi’s is 1/3.
It’s not quite exactly true - the muscles that you use to move your fingers side to side (ie. spreading your fingers apart and bringing them back together) are mostly in the palm, but are anchored a little way up the fingers.
Edited to add: At least some of the diagrams I’m looking at appear to show that… others don’t, so much.
Depending on it’s actual construction it may not explode but it would probably leak a lot since the skin wouldn’t be attached to the inner structure in a manner meant to resist high internal pressure.
Except on the scales subs operate at, 1 atmosphere isn’t a “high” pressure, even if it is on the wrong side.
I can’t say, don’t know a lot about sub construction but aircraft can have problems with leaks at lower pressure differentials. It’s as air that would be escaping, not infiltration from water.
Got it.
The deviation between minimum and maximum altitude might be within regulations for a billiard ball, but an Earth of that size would I think still be perceptibly rough. The Internet says billiard balls have a diameter of 57mm, at which scale something like Mauna Kea would be about 60 microns above the surface; the summit of Mount Denali would be about 30 microns higher than Talkeetna, Alaska. So somewhere between 360 and 240-grit sandpaper—you would notice, running your fingers over it.
Yeah, because unlike sandpaper most of it will feel smooth except for some isolated or small patches of abrasive sticking up.
I would bet that it’s true, or very close for the wars in Afghanistan and Iraq though.
Just don’t go the other way.
