SOLVED

21) Which of the following glacial features would typically be found in close proximity? A) cirque and terminal moraine B) outwash plain and horn C) hanging valley and truncated spur D) drumlin and fiord 22) A(n) ________ represents a former meltwater channel or tunnel in glacial ice that was filled with sand and gravel. A) esker B) yazoo ridge C) valley plain D) kettle 23) Which is the only continent without glaciers? A) Africa B) Australia C) South America D) Europe 24) Which one of the following samples and experimental measurements would provide the most information about the Earth’s climate over the last 100,000 years or so? A) cores from sea ice in the Arctic Ocean; NaCl content B) sediment cores from a terminal moraine in Ohio sand to clay ratio C) sediment cores from a Pleistocene loess deposit in the state of Mississippi; SiO2 content D) cores from the Greenland ice sheet; ratios of the oxygen isotopes (0-18/0-16) 25) ________ is the best explanation for a glacial surge. A) The climate cools suddenly and a retreating glacier begins to advance B) Heavy snowfalls resulting in avalanches in the zone of accumulation C) Melting at the base of the glacier resulting in increased rates of basal slip D) Crevasses opening suddenly near the snout of a glacier 26) All of the following descriptions apply to stratified drift (not glacial till) except for ________. A) deposited directly from melting ice B) sand and gravel beds C) deposits are often layered and well-sorted D) deposited by glacial meltwater streams 27) A(n) ________ is similar in appearance to a sinkhole of a karst area. A) moraine B) esker C) cirque D) kettle 28) Which one of the following prominent landforms, located from the Wasatch Range, Utah, westward to the Sierra Nevada, California, formed during the Pleistocene glacial episodes? A) terminal moraines of continental ice sheets that moved south from Canada B) old shorelines of large, pluvial lakes C) erosional features produced by continental glaciation D) subaerial deltas submerged by the post-glacial rise in sea level 29) A fiord is ________. A) a stream valley, deepened by glacial erosion, that floods as sea level rises B) a glacier-cut valley that is dammed by an end moraine and a large lake is formed C) a glacier-cut valley which sinks below sea level due to glacial rebound after the ice melts D) a large, kettle-pocked moraine left as an island when sea level rises following melting of the ice 30) Which process occurs where a glacier enters the sea? A) kaming B) calving C) surging D) drowning