Brain Teasers
It's Just a Glass of Water.
A glass is filled to the brim with ice water. Another single drop, and it will overflow. Its contents breakdown is as follows: 8.9341 ounces of water and 4.4493 ounces of ice. If it is 84.5 degrees F and the ice is melting at a rate of 103.552 times faster than the rate of evaporation, how far will the glass overflow once the ice melts?
Answer
The glass would not overflow at all. Since the ice is already in the water it is causing as much, if not more displacement than when it melts.Hide Answer Show Answer
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Chances are that initially the condensation on the exposed surface of water will cause a few drops to spill over.
You are forgetting that, unlike all other substances, water expands when it freezes and contracts when it melts. (Otherwise life could not exiost as we know it.) Consequently, as the ice melts, it takes up less volume.
Good! You got me because I thought it sounded too complicated.
exactly, oz....takes up less volume, so it would not overflow (discounting the condensation of course)
Easy, but I just learned that in scool... so
It won't..Breaks basic laws of science.
Oz,
The level of the water does not change when the ice metls. Since ice floats, it displaces its own mass of liquid -- in other words, the same volume the liquid would occupy.
It appears that killalady didn't recognize that principle, either. The basic answer is correct, but the explanation seems unaware of the effect.
The level of the water does not change when the ice metls. Since ice floats, it displaces its own mass of liquid -- in other words, the same volume the liquid would occupy.
It appears that killalady didn't recognize that principle, either. The basic answer is correct, but the explanation seems unaware of the effect.
great teaser! The difficulty rating kind of ruined your confusion factor (all those #s)
OOOOOOOOOOOOKKKKKKKKKK THEN
Um, ez.
this was a very good puzzle i got all worried when i first read it then i thought about it more and i got it... very very good
i got it, but i have a sneaky suspicion (suspision?) that this belongs in science, or at the very least, trivia...
I agree
I agree 100% with sweetime
me too
thats tricky!
If 10% of ice (or iceberg) floats above water, then that would appear above the rim of the glass and should overflow when all is melted
It was a good teaser, but the ice melting thing got me confused,cause I tried it myself with two different glasses and one overflowed but the other didnt so i guess it was allright.
I liked it alot, you had me stumped
good one
I got it! good one!
It was just 2 easy, i mean, i was learning about this stuf in first garde!
p.s. u kind'a did overlook a few things...
p.s. u kind'a did overlook a few things...
What grade will you learn about spelling? There should be easy ones on this site so the younger users can get some right. Nice job.
hence your cup doth nt run over
Just plain fun!
Very good riddle, and an excellent lesson for all the tree-huggers out there. Next time you start fretting about "global-warming" and the polar ice caps melting, remember this riddle...
Actually, it's because ice is less dense than liquid water. This is not true with most (>99%) of other molecules - any other substance overflow after they melt.
i like the teaser and i got it but i thought you were never suppose to freeze water in a glass
Huh
The reason 10% of an iceberg floats above the surface is
a) the iceberg is pure water, the sea is salt water (heavier), increasing the amount above the water. The extra above the water equals the weight of the salt in the space the berg occupies.
b) water expands when it freezes, the amount above the surface in pure water (not 10%) is EXACTLY equal to the amount the water expands as it freezes.
a) the iceberg is pure water, the sea is salt water (heavier), increasing the amount above the water. The extra above the water equals the weight of the salt in the space the berg occupies.
b) water expands when it freezes, the amount above the surface in pure water (not 10%) is EXACTLY equal to the amount the water expands as it freezes.
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