Chapter 7 - 'Characteristics Of Glaciers And Ice Sheets' Flashcards
List the two natural processes contributing to the for,action of glacial features.
Erosion
Deposition
Snow generally melts in … periods.
Snow is generally deposited in … periods.
Warm/dry periods
Cold/humid periods
State what influences the formation of glaciers.
Latitude.
Altitude.
Ice can “ “, “ “ and “ “ rock as it moves slowly from the valley floor.
Scrape
Scour
Remove
Define ‘Moraine’.
A mass of rocks and sediment carried down and deposited by a glacier.
Define ‘Till’.
Boulder clay or other sediment deposited by melting glaciers or ice sheets.
Define ‘Cirque’.
A bowl-shaped, steep-walled mountain basin carved by glaciation, often containing a small, round lake.
Define ‘horn’.
Three or more arêtes, usually forming a sharp-edged peak.
Define ‘arete’.
A thin, crest of rock left after two adjacent glaciers have worn a steep ridge into the rock.
List the three erosion all landforms.
Cirque
Arete
Horn
List the four deposition all landforms.
Eskers
Drumlins
Kame
Kettleholes
Define ‘Esker’.
A long ridge of gravel and other sediment, typically having a winding course, deposited by meltwater from a retreating glacier or ice sheet.
Define ‘Drumlins’.
A low oval mound or small hill, typically one of a group, consisting of compacted boulder clay moulded by past glacial action.
Define ‘Kame’.
A steep-sided mound of sand and gravel deposited by a melting ice sheet.
Define ‘KettleHole’.
A hollow, typically filled by a lake, resulting from the melting of a mass of ice trapped in glacial deposits.
