6/30/2016
GEOL 1030 Pre test S15
GEOL 1030 Pre test S15
Page One
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1. The most common elements in the Earth's crust, in order of decreasing
abundance, are:
 a. feldspar, quartz, pyroxenes
 b. magnesium, oxygen, calcium
 c. oxygen, silicon, aluminum
 d. iron, calcium, sodium
2. Minerals are identi ed on the basis of ________:
 a. their usefulness to man
 b. their physical properties
 c. where they are found
 d. the processes which formed them
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3. Igneous rocks are classi ed based upon:
 a. their mineral texture and composition
 b. how heavy they are
 c. the origin of the sediment from which they formed
 d. how well they burn
4. _____________is a predominant igneous rock of continents and mountain
ranges.
 a. granite
 b. basalt
 c. feldspar
 d. amphibole
5. ____________ is the predominant igneous rock of the oceanic crust.
 a. granite
 b. basalt
 c. feldspar
 d. amphibole
6. The three main types of volcanoes are:
 a. explosive, collapsing, and liquid
 b. small, big, and enormous
 c. deadly, harmless, and submarine
 d. shield, composite, and cinder cone
7. When rocks are exposed at the Earth's surface, they are then altered by:
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 a. contact and regional metamorphism
 b.chemical and mechanical weathering
 c. hydrothermal
uids
 d.cosmic forces
8. Sedimentary rocks may be:
 a. clastic, chemical, or organic
 b. intrusive or extrusive
 c. foliated or non-foliated
 d. from the mantle
9. The two classes of metamorphic rocks are:
 a. igneous and chemical
 b. foliated and non-foliated
 c. conglomerate and breccia
 d. meteors and comets
10. Relative time is concerned with:
 a. the sequence or order in which events took place
 b. the actual age of a rock or event, in years
 c. radioactive decay
 d. identifying rock types
11. Absolute or numerical age is concerned with:
 a. the sequence or order in which events took place
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 b.the actual age of a rock or event, in years
 c. the classi
cation of rocks
 d. the naming of unconformities
12. An igneous rock once contained 8 grams of a parent isotope. It now
contains 1 gram. The half-life of the parent isotope is 100,000 years. The rock
is how old?
 a. 700,000 years old
 b. 300,000 years old
 c. 50,000 years old
 d. 800,000 years old
13. The movement of a mass of debris or bedrock toward the base of a slope
is called:
 a. a tsunami
 b. a gravitational anomaly
 c. an earthquake
 d. mass wasting
14. The drainage basin of a stream:
 a. is the total area drained by a stream and its tributaries
 b. a bowl-shaped depression containing a lake
 c. has no outlet
 d. is the same as a
ood plain
15. Groundwater velocity depends on:
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 a. the density of the rock
 b. magnetic currents
 c. isostatic rebound
 d. the slope (gradient) of the water table and the permeability of the rock
16. The amount of seasonal snowfall required for a glacier to form is:
 a. more than 30 feet
 b. more than melts in the warm season
 c. 2 inches
 d. a lot
17. Glaciers can be classi ed as:
 a. ice sheets or valley glaciers
 b. permanent or temporary
 c. moving or not moving
 d. high altitude or low altitude
18. Which of the following would not be a control on desert development:
 a. presence of a rain shadow on the downwind side of a mountain range
 b. location a great distance from an ocean
 c. location near cool ocean currents
 d. climatic belts at 300 north and south latitude
19. Rocks under stress may break and create a _________or bend and create a
_______.
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 a. mountain, valley
 b. fault, fold
 c. volcano, crater
 d. continent, ocean
20. The __________contains most of the world's earthquakes:
 a. interior craton of North America
 b. San Andreas Fault
 c. east coast of South America
 d. circum-Paci
c Belt
21. Earth scientists use _____to get most of the information about the interior
of the Earth:
 a. dredges
 b. caves
 c.seismic waves and geophysics
 d. satellites
22. We know that the North and South magnetic poles have reversed
positions in the past by:
 a. using gravity meters
 b. seismic wave shadow zones
 c. measuring the magnetic
elds and isotopic age of igneous rocks
 d. the question is unanswerable because the magnetic poles have not
changed
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23. A globe-circling mountain range made of basalt, located mainly in the
middle of the oceans is:
 a. the continental rise
 b. the mid-oceanic ridge
 c. the Marianas Trench
 d. the aseismic ridge
24. The idea that the Earth's surface is divided into several large tabular
shapes that change position is called:
 a. uniformitarianism
 b. catastrophism
 c. plate tectonics
 d. shrinking and swelling of the Earth
25. Plate tectonics combines the concepts of:
 a. continental drift and sea
oor spreading
 b. joints and faults
 c. anticlines and synclines
 d. asteroid strikes and meteorite strikes
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