actually
she as me
is right about melting iceburgs having no effect on water levels
click the link for an experiment that you can do to prove this
www.bbc.co.uk...
Melting ice
One of the most common misconceptions about polar seas is that if ice shelves or icebergs melt, the sea level will rise. This is actually not true -
why?
1) Water expands when it freezes making it less dense than the water from which it freezes. In fact, its volume is a little over 9% greater (or
density ~ 9% lower) than in the liquid state.
2) Therefore both ice shelves and icebergs float on the sea surface.
3) As they float, they displace the same volume of water that they contain.
4) So if they were to melt, the sea level would stay exactly the same.
this is the real problem that melting iceshelves could cause
Just because melting ice shelves and icebergs have no effect on sea level doesn’t mean that there isn’t actually a problem. If global warming causes
large areas of Antarctic ice-shelf to break off and melt, the sea level won’t be affected; but what could happen is ice and snow covering the
continent will no longer have anything holding it in place. If this slides into the ocean and melts, then the sea level will rise. It has been
estimated that if the Antarctic ice sheet melted, it would raise sea levels by around 65 to 70 metres! So global warming could have catastrophic
effects!
