toriver said:
Drexer said:
Ldude893 said:
The melting ice caps put less pressure on fault lines around the Earth, allowing them to open up like old wounds, which explains the increase seismic activity lately.
At least that's what I've heard.
And somehow a kilo of ice weighs more than a kilo of water? [http://tvtropes.org/pmwiki/pmwiki.php/Main/YouFailPhysicsForever]
A kilo of ice most certainly can weigh more than a kilo of water. It's the difference between mass and weight. Having a kilo of ice and a kilo of water just mean that you have the same amount of actual stuff (mass) in both. Density needs to also be taken into account when figuring weight. If you have a kilo of something packed into a small space, it will likely weigh less than a kilo of something spread out over a large space. So ice can weigh more than water, even if they are essentially the same substance, because the ice is tightly packed, while the water will be spread out. That's how you can have enough water packed into the relatively small space of the polar ice caps to raise the sea level enough to swallow even rather large islands whole.
If you weigh the same mass of substance, they weigh the same. It doesn't take density into consideration.
Also, ice in water does not raise the sea level. Ice also has a lower density and is therefore less dense (or packed if you will) than water.
That doesn't mean it lowers the sealevel, though. Ice replaces the same amount of water it weighs, raising the sea by the same amount whether it is frozen or liquid.
EDIT: Ow, massively ninja'd. Oh well