SOLVED

1) Which of the following factors did not contribute to climate change? A) variations in the chemical composition of the atmosphere B) circulation of ocean currents C) changes in solar flares D) variations of the Earth’s orbit 2) The ________ was the most recent Pleistocene glacial episode in North America. A) Dakotan B) Kansan C) Indianan D) Wisconsinan 3) ________ is one of the two major flow mechanisms in a glacier. A) Basal slip B) Crevassal slip C) Frost heaving D) Morainal sliding 4) Where is the world’s largest ice sheet located today? A) Greenland B) Russia, Siberia C) Iceland D) Antarctica 5) Where are the only present-day continental ice sheets? A) Greenland and Iceland B) Iceland and Antarctica C) Greenland and Antarctica D) Antarctica and Northern Canada 6) Which type of glacial drift is deposited by glacial meltwater? A) Stratified drift B) Till C) Unsorted sediment D) Basaltic flows 7) The bottom or downward tip of a crevasse marks the ________. A) boundary between parts of the glacier moving by basal sliding and crevassal slip B) boundary between the basal sliding and external flowage zones C) bottom of the basal sliding zone D) top of the internal deformation and flowage zone 8) Which one of the following applies to a valley glacier that lengthens (extends its terminus downslope) over a period of many years? A) Wastage exceeds accumulation. B) Accumulation exceeds wastage. C) Accumulation and wastage are about equal. D) none of the above 9) Abrasion and plucking generally involve what part of a glacier? A) the internal, flowage zone B) the snout zone C) the surface, brittle zone D) the basal, sliding zone 10) Where are the largest kettles located? A) Minnesota B) Massachusetts C) Iowa D) Michigan 1