Well what's the difference between a cap and a sheet?

Hi Jada "Glaciers, ice caps and ice sheets, what's the difference BETWEEN them?" Both ice caps and ice sheets are types of glacier formations, or morphologies. A rough guide: Ice sheets and ice caps are areas of ice which are not constrained by topography. An ice cap is smaller than an ice sheet - the threshold between an ice cap and an ice sheet is generally accepted to be 50,000 square kilometres. A glacier is an ice formation which is constrained or controlled by topography, and there are about 10 second-order classifications, such as 'valley glacier', 'cirque glacier' etc. (thanks to Benn & Evans, 2003)