Quizes Flashcards
The faster part of the glacier is usually at the A)sides of base B) center of base C) sides of the surface D) center of the surface
D
A large deposit of terminal moraine in a valley may indicate that A)a glacier passed through quickly B)a glacier calves there C)an ice front remained there D) two glaciers joined there
C
One way to determine the direction which a glacier passed through a valley is to study A) potholes in the valley floor B) it's riches moutonnees C) in ground moraine D) it's nunataks
B
A geologist studying a glacial area concluded that some of the sediments had been carried by glacial meltwater because they were A) newly formed B) U sorted C) stratified D) very old
C
Which one of the following is not characteristics of the sediment in a moraine
A) there is lack of strata
B) the sediment is poorly sorted
C) the particles are not well rounded
D) the sand -sized particles are virtually all Quartz
E) the sediments form lateral and terminal features
D
Which of the following features of glacial activity is the product of deposition all processes rather than erosion ? A) fjord B) hanging valley C) kettle D) cirque E) horn
C
Glaciers are most likely to be formed in areas which are ?
A)high above sea level but close to the equator
B)close to sea level but far from the equator
C)high above sea level and far away from equator
D) close to sea level and close to the equator
C
Which of the following is NOT characteristics of glacially shaped landscapes? A) an arête B) a cirque C) a hanging valley D) a truncated spur E) a v-shaped valley
E
Which of the following features are typical of both alpine and continental glaciation ? A) striations and erratics B) drumlins and cirques C) striations and cirques D) drumlins and erratics
A
Which of the following is a deposit formed by a glacier A) a striation B) a drumlin C) a cirque D) an arête
B
A bowl-shaped depression at the head of a glacial valley is called A) a kettle B) an arête C) a cirque D) an oxbow
C
What is the name for a ridge between two glacial valleys A)col B)horn C) arête D) Roche mouton
C
The erosional feature that results from glaciation is a(n) A) arête B) esker C) Kame D) moraine
A
What is the name of the material that forms stripes down the length of a glacier A) terminal moraine B) recessional moraine C) medial moraine D) ground moraine
C
Glacial sediment deposited directly by melting ice is called A) till B)breccia C) a varve D) a moraine
A
The name given to a narrow ridge between two glacial valleys is a(n) A) esker B) tarn C) arête D) cirque
C
Which of the following is NOT a feature of glacial deposition A) Kame B)esker C)cirque D)moraine
C
Which of the following is least likely cause of past ice ages
A) changes in the tilt of the earth’s axis b) a decrease in the earths internal heat
C) blocking of solar radiation by volcanic ash and dust
D) changes in oceanic circulation due to continental drift
B
The granular stage between snow and glacial ice A) water B) crystals C) fern (nevee) D)recrystallization E) melting
C
An armchair-like basin excavated in bedrock by a glacier is a(n) A) arête B) hanging valley C) cirque D)U- shaped valley E)horn
C
A long sinuous ridge of glacio-flu vial sediment is known as a A) drumlin B) kettle C) esker D) lateral moraine E) medical moraine
C
(Bp means before present) The period of glaciation from approximately 2m.y.b.p to 10,000 years bp is known as the A) Holocene B) Pliocene C) Miocene D) Oligocene E) Pleistocene
E
Fallen snow that is compressed and recrystallized becomes rough granular ice material called A) drift B) firn C) slush D) frost
B
Which of the following processes would be primarily responsible for the formation of a hanging valley
A) erosion by glacial ice
B) direct deposition by glacial ice
C) deposition by meltwater from glaciers
D) a hanging valley is not formed by a glacial process
A
Which of the following processes would be primarily responsible for the formation of an esker
A) erosion by glacial ice
B) direct deposition by glacial ice
C) deposition by meltwater from glaciers
D) an esker is not formed by a glacial process
C
In which one of the following locations would a medial moraine be found A) under till B) on the side of a glacier C) as part of a Kame terrace D) at the terminus of a glacier E) as a ridge on the middle of a glacier
E
Glacial erosion is directly affected by the A) thickness of the ice B) temperature of the ice C) crystal size of ice grains D) water-to-ice ratio
A
All of the following glacial features could be used to determine the original flow direction of an ice flow EXCEPT A) drumlins B) striations C) eskers D) kettles
D
Which of the following features is a result of glacial deposition A) erratic B) arête C) cirque D) horn
A
Which of the following has been considered by geologists as a possible cause of the last ice age
A) reduction in sea level
B) runaway greenhouse effect
C) destruction of the ozone layer
D) changes in earths tilt, wobble and orbit
D
Which of the following statements BEST describe a valley glacier
A) it is only a few meters thick
B) it is a slow-moving wedge of ice
C) only the highest mountain peaks reach above it
D) it sometimes breaks into chunks called icebergs
B
When traveling from the earths equated to the poles, the snow lines A) become lower B) become higher C) become thicker D) become thinner
A
Galician crevasses rarely go deeper that forty meters because the ice at that depth is A) more brittle B) colder C) more flexible D) harder
C
Large glacial boulders that have been moved into an area are called A) erratics B) drumlins C) eskers D) nunataks
A
The max rate of movement of a glacier would probably occur on a A) steep slope during summer B) steep slope during fall C) gentle slope during summer D) gentle slope during spring
A
GLACIAL FEATURES U 40 The furthest advance of a glacier is best indicated by A) kettles B) drumlins C) Kame terraces D) terminal moraines
D
What is the best info that glacial striations can provide geologists A) the exact date of glaciation B) the thickness of the ice sheet C) the speed the glacier was moving D) the direction of the glaciers flow
D
All of the following result from glacial deposition except A) Kames B) erratics C) moraines D) striations
D
Drumlins can be used to give an indication of a glaciers A) rate of advance B) direction of flow C) time of formation D) duration of advance
B
A terminal moraine could not be used to provide info on a glacier's A) furthest advance B) direction of flow C) rate of ice formation D) max size and shape
C
Which is associated with ice sheets A) end moraines B) arête C) lateral moraines D) medical moraines
A
The water table will be likely deepest in which A) woodland B)desert C) swamp D) farmland
B
An aquifer that is very deep underground is probably located A)far from its source B) close to its source C) directly above its source D) directly below its source
A
Carbonic acid in the rainwater causes caverns to be formed in limestone only when
A) there is greater than a average rainfall
B) the limestone is already cracked
C) the limestone is very old
D) all the surrounding soil has been eroded away
B
True ground water is A) all water below the ground surface B) water in the vadose zone C) water below the table D) soil moisture
C
Consequences of groundwater withdrawal may include A) saltwater intrusion B)surface subsidence C)compaction of a aquifer rocks D) all above
D
If fresh ground water is actively pumped in a coastal region, all of the following may occur EXCEPT
A) salt water intrusion
B) coning at the base of the fresh water lens
C) development of a perched water table
D) surface subsidence
C
A rock with spaces between the grains of its material is set to be A) permeable B) impermeable C) nonporous D) porous
D
The porosity of a rock is
A) the amount of void space in it , U filled by minerals
B) the ease with which fluid passed through the rock
C) Independent of how the grains in the rock fit together
D) a result of stress applied to the rock
A
The largest reservoir of fresh water in the global Hydrologic cycle is A) the oceans B) ice C) lakes and streams D) ground water
B
A perched water table is
A) a local water table higher than the regional water table
B) the top of the freshwater lens in a coastal region
C) a water table artificially elevated by pumping
D) the water surface in a lake
A
A terrain having abundant sink holes together and other solution features is described as A) cavernous B) porous C) permeable D) karst
D
A typical water well must reach A) below the zone of saturation B) only as far as the zone of aeration C) into the impermeable bedrock D) below the lowest level of the water table
D
A farmer in a hilly area wants to grow a crop which requires a lot of water very near the soil surface. For this reason, he will most likely plant his crop A) next to his well B) on a hill side C) on a hill TOM D) in a valley
D
As the population of a city increases,more water is consumed than can be replaced by rainfall. The areas water table will likely A) rise B) fluctuate C) drop D) unaffected
C
In general , the large part of deeply Buried water under land surface is derived from
A) overlying groundwater and rainwater
B)entrapment of seawater
C) underlying magma
D) fractures which lead to ocean floor
E) no special sources-the water has always been there
A
All of these are examples of flows except A)debris Avalanche B)nuee ardente C)soliflucrion D)slump
D
Which of the following processes is not a type of mass movement A) creep B) Avalanche C) landslide D) exfoliation
B
Which of the following mass movements is least likely to cause loss of life A)slump B)soil creep C) debris flow D) rock Avalanche
B