Warm water is less
dense than cold water, so the cold water in the water balloon was more dense than the hot water and so sank.
Not exact matches
And around Antarctica, where even the surface ocean
water is already quite
cold and
dense, some of that
water in the ocean depths, which is also carbon rich, eventually warmed enough so that it became less
dense than the
water above it.
Cold water is
denser than warm
water, and salt
water is
denser than freshwater.
temperature of the
water —
cold water is more
dense than warm
water, so it sinks.
These corals — surviving at depths from 540 to more
than 9,840 meters below sea level — are some of the most diverse,
dense, and pristine assemblages of
cold -
water corals in the world.
Cold water is more
dense than warm
water.
But your link shows that warm saltier
water can be
denser than colder fresher
water, I should have remembered that as it is one of the factors that drives the thermo - haline circulation.
Factor in the fact that soils amd
water are at least ~ 1000 times more
dense than air and the idea that gases can heat warmer surfaces like soils and especially
water whilst most of the atmosphere is actually much
colder just seems - well — ludicrous.
Since this
cold water is
denser than the hot
water it's replacing, it potentially provides more pore space for storing carbon dioxide.
I should clarify that
water does not necessarily need to be less
dense to rise if it's being displaced by
water at a greater pressure gradient, but it's still statistically more likely for
cold water to sink
than warm
water.
Cold water sinks readily in polar regions, as the surface
water tends to be closer to freezing, as well as being fresher from ice melt, and therefore less
dense than the inflowing currents, which are in turn are rendered more saline by the fresh
water freezing out.
Cold water will sink, moving warmer
water upwards, or along in a current until it reaches a position where it's less
dense than the
water above, at which point it rises.
You can rest assured though that the top will usually be warmer
than the bottom since
colder water is
denser.