Eli5: How does glaciers melting cause the oceans to rise?

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If global warming causes glaciers to melt, how does that increase the water level if there is still the same amount of water, but in different forms (liquid and solid)?
Like if you have a glass of water with ice cubes in it filled to the brim, and the ice melts, the glass doesn’t overflow…

In: Chemistry

5 Answers

Anonymous 0 Comments

2 main reasons I know of:

The melting ice isn’t all floating, a lot is on land.

The ice that is floating tends to be freshwater, rather than salty, so it displaces less liquid than it contains. Think along the lines of an ice cube in a glass of custard, but obviously closer in density.

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