GEOS 100 EXAM 3 MON 11/03/03 TIME- 11:00 to 11:50 am
INSTRUCTOR: DELWAR
AHMED
Answers highlighted by blue are
the correct answers. Bonus questions are highlighted in
green.
1 point each
1. After ice sheets and glaciers, which one contains the next highest percentage of Earth’s freshwater? A. the atmosphere B. lakes and rivers C. groundwater D. oceans
2. Which common, rock-forming mineral or mineral group is most readily dissolved by groundwater? A. calcite B. quartz C. feldspars D. clay minerals.
3. [T F] Water infiltrates down to the water table from gaining streams
4. [T F] Porosity is a measure of the volume of open space in rocks and unconsolidated geological materials like alluvium, and soils.
5. [T F] Permeability is the ability of water to flow through a porous subsurface material composed of soil and alluvium.
6. [T F] The water table is the surface separating the saturated and unsaturated zones.
7. [T F] Most caves and caverns originate by solution of limestone.
8. [T F] Water saturated muds have low permeabilities but can have greater porosities than sandstone.
9. [T F] Warm springs in the
western
10. [T F] Lowering of the water table around a pumping well results in a cone of infiltration.
11. [T F] A geyser can erupt because the boiling temperature of water decreases with depth below water table.
12. [T F] Artesian condition can develop in an inclined aquifer with aquicludes above and below.
13. Which statement about the aerated zone is true?
A. lies above water table
B. the pore spaces are saturated with water
C. is a well-oxygenated, shallow aquifer
D.
lies below the
capillary fringe zone.
14. For unconfined aquifers, what hydrologic factor is approximated by the slope of the water table? A. porosity head B. hydro competency C. affluent D. hydraulic gradient
15. Which response best describes an aquifer?
16. Which one statement is inappropriate for an area subsiding because of excessive extraction/pumping of groundwater? one answer
a. the aquifer material compacts when dewatered
b. the water is substantially lowered
c. the aquifer in unconsolidated bedrock
d. none of the above
17. [T F] Crevasses are short, narrow cracks in the plastic flow zone of a glacier that alternately open and close as the ice flows along.
18. [T F] The downstream end or snout of a glacier advances over periods of time during which ablation exceeds accumulation.
19. How long ago did we had peak of glacial age? A. 180 yrs B. 1800 yrs C. 18000 yrs D. 180000 yrs
20. Which one statement concerning glaciers is not true? one answer
a. ice sheets are larger than ice caps
b. piedmont glaciers form on lowlands at the base of mountainous terrain
c. the volume of water tied up in Antarctic ice sheet is about the same as
the total discharge of the
d. long,
extended, alpine glaciers occupied valleys in most high, mountainous areas in
the
21. Which erosional feature is specifically produced by Alpine glaciers? A. lateral moraine B. drumlin C. crevasse spur D. U-shaped valley
22. Which glacial landform is likely to be evident today as a waterfall? A. outwash plain B. hanging valley C. drumlins D. horn peak
23. Where is
the world’s largest continental ice sheet?
A.
24. Which moraine is formed from the merging of two lateral moraines at a junction two valley glaciers? A. medial B. terminal C. recessional D. ground C. kettle
25. Why there are much more evidence of past glaciations in the northern hemisphere than the southern hemisphere?
a. techniques are much more advanced in the northern hemisphere
b.
there are much more landmass in the
northern hemisphere than there are in the southern hemisphere
c. it was much colder in the northern hemisphere than the southern hemisphere
d. there are lots of deserts in the southern hemisphere
26.
Which
one is not a typical feature of glaciated Alpine terrains? A. horn
B. aręte C. lateral moraine D. hanging erratics
27. [T F] Running water is an important erosional agent in many arid lands despite infrequent rainfalls.
28. [T F] A playa is an intermittent lake on the floor of a desert valley.
29. [T F] There are more deserts in the southern hemisphere than the northern hemisphere.
30. Which statement is most logical one? one answer
A.
B. Gobi desert is a rainshadow desert in central China
31. [T F] Bajadas develop from coalescence of alluvial fans along fronts of mountain ranges in arid lands.
32. [T F] Loess consists mainly of silt-sized particles.
33.
[T F] Wind turbines 10 meters above the
ground surface are subjected to relatively little abrasion by blowing sand.
34. [T F] Inselbergs and small, steep, alluvial fans are characteristic of recently faulted, basin and range terrain in dry lands.
35. Which statement concerning the dry lands in generally false?
A. precipitation totals are low
B. evaporation potential exceeds actual precipitation
C. storms are infrequent and rainfall amounts are highly variable
D. wind is the dominant agent of erosion and sediment transport
36. Which
response best characterizes climatic factors that cause low latitude deserts
like the
A. cool, dry air aloft is descending; surface winds are blowing toward
equator
B. warm, humid air aloft is descending; surface winds are blowing away from the equator
C. warm, humid air is rising; surface winds are calm
37. What are inselbergs?
A. insulated icebergs
B. blowouts cut from bedrock in mountainous areas
C. lithified rock formed by cementation of wind-deposited, dune sands
D. bedrock hills in an old-age, desert landscape
38. Abrasion by wind-blown sand forms which feature?
A. playa
B. ventifact
C. pediment D. desert pavement
39.
Which
dunes result from persistent, onshore winds in some coastal areas?
A.
star B. barchanoid
C. parabolic D.
diabolic
40. Which dunes are long, high, sand ridges oriented parallel to the prevailing wind direction? A. transducinal B. longitudinal C. latitudinal D. transversal
41. Which dunes are solitary and crescent-shaped with the tips facing downwind?
A. transverse B. parabolic C. barchan D. starverse
42. Which dunes are oriented at right angles to the prevailing wind direction?
A. longitudinal B. latitudinal C. starburst D. transverse
43. [T F] As waves move into beach area, they change to waves of translation.
44. [T F] A baymouth bar is a manmade feature designed to stop incoming storm waves before they impact on the beach.
45.
Which
current move sand and water parallel to the beach? A. reflected
B. translational C. longshore D. ebb tide
46.
[T F] Deep water waves in the open sea
are waves of oscillation.
47. [T F] Elevated, wave-cut platforms are good evidence of emergent coastlines.
48. When does a deep water wave change to a shallow water wave?
A. only when the wave period is greater than one-half the water depth
B. only when the wavelength is about twice the water depth
C. only when the period is greater than twice the water depth
D. only when the wavelength is about one-half the water depth
49. Incoming waves slow down and rotate toward being parallel to the shoreline. What term denotes this process? A. translation B. refraction C. reflection D. relaxation
50. Which is a manmade coastal feature? A. sea arch B. sand pit C. breakwater D. barrier island
51. Which is an isolated remnant of bedrock standing above the water? A. sea spit B. sea arc C. sea span D. sea stack
52. Which sand bar extends partway across the mouth of a bay or estuary? A. spit B. jetty C. barrier island D. sand arch
53. What is a baymouth bar?
A. a sand barrier extending partway across the entrance to a bay or estuary
B. a sand deposit on the estuary side of an inlet through a barrier island
C. a sand deposit on the seaward side of a tidal inlet to a large estuary
D. a sand bar extending across the former inlet to a bay or estuary
Good luck with your exam!
