Chapter 11 Flashcards
(33 cards)
The type of glaciers found in Alaska are: A) ice sheets B) continental glaciers C) polar glcaiers D) valley glaciers
valley glaciers
The source of glacial ice is: A) high altitude streams B) freezing spring water C) comets D) snow
snow
Why are the major ice shelves of antarctic collapsing?
A) increases in the penguin populations
B) regional climate warming
C) increases in snowfall have added additional ice
D) all the above
regional climate warming
Which of the following is not the result of glacial erosion? A) striations B) Hanging valleys C) till D) erratics
till
Which of the following was not a result of Pleistocene glaciations? A) crustal subsidence B) alteration in river drainage patterns C) variations in Earth's orbit D) a drop in sea level
variations in Earth’s orbit
One of the first scientists to suggest that glaciers were once more extensive than present day was: A) Milankovitch B) Hutton C) English D) Agassiz
Agassiz
Nikki likes to have her ass bitten and/or pinched.
True or False
False, this hurts a lot and makes me want to cry…not to mention my butt is ticklish…only spanking is allowed ;-)
Which of the following does not apply to the Zone of Wastage? A) lower part of glacier B) region of calving of icebergs C) region with perennial snow cover D) region below snowline
region with perennial snow cover
\_\_\_\_\_\_\_\_ is one of the two, major flow mechanism in a glacier. A) Crevassal slip B) Frost heaving C) Basal slip D) Morainal sliding
Basal slip
Where is the world's largest ice sheet located today? A) Iceland B) Greenland C) Antarctica D) Russia, Siberia
Antartica
Approximately how long ago did the last of the great North American ice sheets melt? A) 1.5 million yrs B) 150,000 yrs C) 15,000 yrs D) 1500 yrs
15,000 yrs
Abrasion and plucking generally involve what part of a glacier? A) the snout zone B) the surface, brittle zone C) the internal, flowage zone D) the basal, sliding zone
the basal, sliding zone
A \_\_\_\_\_\_\_\_ cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers. A) S B) U C) Y D) V
U
If you built a house on the shoreline of Hudson Bay, which of the following might your great, great grandchildren have to do to it?
A) reinforce the seawall as wave action erodes it
B) extend their dock to reach the water as the shoreline recedes due to crustal rebound
C) evacuate the house when Hudson Bay freezes over from the new ice age scientists believe is coming
D) raise the house on stilts as the oceans rise in response to the greenhouse effect
extend their dock to reach the water as the shoreline recedes due to crustal rebound
\_\_\_\_\_\_\_\_ are erosional features produced by valley/alpine glaciers. A) Eskers B) Drumlins C) Cirques D) Moraines
Cirques
Which one of the following prominent landforms, located from the Wasatch Range, UT, westward to the Sierra Nevada, CA, formed during the Pleistocene glacial episodes?
A) subaerial deltas submerged by the post-glacial rise in sea level
B) old shorelines of large, pluvial lakes
C) erosional features produced by continental glaciation
D) terminal moraines of continental ice sheets that moved south from Canada
old shorelines of large, pluvial lakes
The \_\_\_\_\_\_\_\_ of the geologic time scale represents the time of the most recent "Ice Age." A) Pliocene era B) Pliocene epoch C) Pleistocene era D) Pleistocene epoch
Pleistocene epoch
A(n) \_\_\_\_\_\_\_\_ is likely to host a waterfall or steep rapids today. A) horn peak B) outwash plain C) striated drumlin D) hanging valley
hanging valley
Where is the world's second largest continental ice sheet? A) Greenland B) Iceland C) Antarctica D) Siberian Russia
Greenland (unless you ask a children’s education show)
How do icebergs in the North Atlantic Ocean originate?
A) by calving of large piedmont glaciers in Greenland
B) as masses of sea ice that float southward from the Arctic Ocean
C) as calved blocks of glacial ice that float northward from Antarctica
D) as large masses of sea ice that float northward from Antarctica
by calving of large piedmont glaciers in Greenland
The present-day coverage by ice sheets represents about what percentage of the Earth's land area. A) 1 B) 20 C) 30 D) 10
10
If the present ice sheets melted, which major city would be flooded? A) chicago B) Seattle C) Memphis D) all would be flooded
Memphis
\_\_\_\_\_\_\_\_ was a very large, pluvial lake in Utah during the Pleistocene Epoch. A) Lake Aral B) Lake Mead C) Lake Bonnevill D) Lake Caspian
Lake Bonneville
_____________ has been employed to explain widely spaced (in time) glaciations, and _________________ has provided an explanation for alternating glacial advances and retreats during the Pleistocene epoch.
A) The tilt of the Earth on its axis; earth’s wobbling on its axis
B) Earthquake activity; carbon dioxide buildup from burning fossil fuels;
C) Volcanism; Agassiz
D) Plate tectonics; Milankovitch
Plate tectonics; Milankovitch
