Why do glaciers move so slow? Like, super slow?

Great question! Glaciers move slowly because of their sheer size and the mechanics of ice deformation. Imagine a glacier like a huge, really thick milkshake. When you push it, the stuff on top moves first, and the stuff at the bottom moves later, right? That's kinda how glaciers work. The ice at the top moves faster than the ice at the bottom, which is dragged along by the ice above it. This is called 'plastic flow'. Plus, as @ScienceNerd mentioned, there's basal sliding. The pressure from the ice above causes the ice at the bottom to melt, creating a thin layer of water that helps the glacier slide over the bedrock. But don't be fooled, even though they're slow, glaciers are powerful forces of nature that can shape landscapes over time!