This interactive activity adapted from Texas A&M University simulates how the melting of ice shelves and ice sheets affects sea level. In one video, observe a block of ice melt while it floats in the tank, simulating an ice shelf; the water level does not change. In a second video, see a block of ice melt as it rests on a plank of wood above the water, simulating an ice sheet; the water level rises.
This media asset was adapted from the Texas A&M University: Ocean Drilling Distance Learning Program.
© 2014 PBS & WGBH Educational Foundation. All rights reserved.