Ice on the land Keywords 0.0 / 5 ? GeographyIce on the landGCSEAQA Created by: JazyxCreated on: 06-04-16 10:58 Glacial periods Colder periods of time. Ice on the earth advances. Duration of 100,000 years. 1 of 9 Interglacial periods Warmer periods of time. Ice on the earth retreats. Duration of 10,000 years. 2 of 9 Ice sheets Are a mass of glacier ices that covers surrounding terrain and is greater than 50,000km2. There are two - Antaractia and Greenland. 3 of 9 Snow patches are a pattern of snow which lies on the surface for a longer time than other seasonal snow cover. 4 of 9 Ice Caps Are an ice mass that covers less than 50,000km2 of land area, usually covering a highland. 5 of 9 Valley Glaciers Are a stream of flowing ice that are confined within stepp walled valleys. 6 of 9 Abrasion An erosion process- rock fragments in the ice grind along the surface like sandpaper, causing erosion. 7 of 9 Striations Scratches in the rock caused by abrasion. 8 of 9 Plucking Ice sticks to the rock - as the glacier moves the rock and plucked out of place. 9 of 9
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