Ice Shelf

Imagine a super-duper big, flat piece of ice that's actually part of a glacier, but it's floating on the ocean! That's an ice shelf. It's like a giant frozen river that has flowed all the way to the sea and is now chilling on the water.

These icy giants are found in very cold places like Antarctica and the Arctic. They are so thick, they can be as tall as a skyscraper or even taller than a giraffe!

Ice shelves start their journey on land as glaciers. Glaciers are like slow-moving rivers of ice that creep downhill. When a glacier reaches the coast, it can keep flowing out onto the ocean.

If the ice is thin enough, it floats instead of resting on the ground. This floating part is the ice shelf! It gets bigger as more ice flows from the land glaciers onto it, like adding more blocks to a giant ice tower.

These floating ice platforms are like giant stoppers for the glaciers behind them. They hold back huge amounts of ice on land. If an ice shelf breaks apart, the glaciers behind it can flow much faster into the ocean. This can cause the sea level to rise, which is like adding too much water to a bathtub. So, ice shelves help keep our oceans at a safe level!

Sometimes, big chunks of ice break off from the edge of an ice shelf. This is called calving. It's like a giant ice cube breaking off from a frozen drink. These broken pieces are called icebergs. Ice shelves can also get thinner from melting underneath because the ocean water is warmer than the ice. Scientists watch ice shelves very closely to see how they are changing.