- A glacier is a giant sheet of ice on land; sometimes pieces break off into icebergs.
- A glacier is huge land ice that can drop big chunks called icebergs.
- A glacier is a slow, massive ice sheet on land, and parts can break off and float away.
Three simple, shorter ways to explain glaciers to a 7-year-old: big sheets of ice on land that sometimes break off and become icebergs.