FReepers attempt to understand basic science

http://www.freerepublic.com/focus/f-news/1891500/posts

:popcorn:

n/t

:rofl:

back and it started when somebody made the same comment about ice melting, although I think it was in a cup of cocoa. :P

than the rest. Actually the part sticking out of the water does make the sea rise. It all depends on the density of the ice.

because obviously the displacement is only equal to the part that's in the water (although ice does take up slightly more volume than the equivalent amount of water AFAIK).

Do the experiment yourself. Ice above water DOES NOT cause the level to rise because it's equivalent mass of water has already been displaced. That is the very discovery that cause Archimedes to jump from his bath tub and shout Eureka! Since the Greeks knew this in 200 BC why don't Americans know it in 2000 AD? Grrrrrrr.

The mass of the water displaced will have the same mass (on edit: and volume) as the ice that is under the water would be my guess. (on edit: however the displacement is due to the volume not the mass).

If you think about it - if you place a piece of lead in a bath-tub it displaces the *volume* of the lead not the *mass* of the lead.

The Archimedes principle http://en.wikipedia.org/wiki/Archimedes%27_Principle says the upward buoyant force will equal the mass of the same volume of water. If the object is floating it will displace as much water as it must to balance the upward buoyant force. If the object has sunk then its mass is greater than the mass of the same volume of water. (It still weighs less under water than it does above water.)

Water expands when it freezes, that's why if floats instead of sinking. By contrast, solid iron sinks in molten liquid iron, solid carbon dioxide (dry ice) sinks in carbon dioxide gas. Water is unique in having it's solid phase float in its liquid phase. When the ice melts it shrinks down to a volume of water equivalent to the volume of water that it was displacing when it was solid, but floating. Warm water expands slightly and takes more volume than cold water, but even very warm water has far less density than ice.

Try the experiment yourself. The scientific method hinges on repeatability. You can repeat the experiment yourself and verify Archimedes principle. You don't have to take anything on faith. You can prove it for yourself.

to your scientific rigour, sir

<doffs cap>

on edit: spelling!

..is currently on land.

Ice expands as it freezes - the amount that floats above the surface is equal to the volume displaced by the expansion of the freezing, so there is no net loss or gain.

Also, water expands both as it freezes and as it warms, so cold water is the base, and if it is either frozen or warm it takes more volume.

though of course, there are other, more complicated implications that the analogy fails to account for. Salinity being one of them.

So many of them struggle to make the data prove that global warming is not occurring. When will they learn that they cannot fight mother nature.

My 2 cents: The day the Greenland Glacier will fracture and its top half slides to "mega-tsunami" Wall Street and it's too late, as usual with these whitewasher$.

Never, as there profits are more important than the truth. When there isn't anymore ice remaining on the poles they will just say it happens naturally every so many millions of years and continue their greedy ways by charging $10 per ice cube for those trying to cool off with no electricity to billions of people. That all predisposes that they will be around to give their halfassed excuses to anybody as there may not be life left here as we know it.

"Son, never pick a fight with: mother nature, mother-in-laws, or the mother-f***ing Russians"

That's pretty much the sum total of their arguments.

Fuck them. Fuck all of them.

I remember being pretty impressed by a thread there about the space shuttle.

...you'll win no friends here OR at FR. We're all much happier when we can believe that all of "us" are enlightened, morally superior human beings, and all of "them" are knuckle-dragging villains.

Get it?

sheeeeeesh....

ironically,
Bright

How do you reconcile that?

Silly.

Darwin has a lot of support over there (not total) and intelligent design is often met with scorn.

Evolution is a heated debate in Freeperville.