Quiz: Earth And Geology
(197).jpg "Quiz: Earth And Geology")
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- 1.Which of the following features only forms underwater?
- A.
Aa
- B.
Pyroclasts
- C.
Pahoehoe
- D.
Pillow basalt
- E.
Volcanic breccia
- 2.Ductile rocks deform by faulting
- A.
True
- B.
False
- 3.What types of plate boundaries can be found along the western coast of the US
- A.
O-O divergent
- B.
C-C divergent
- C.
O-O convergent
- D.
O-C convergent
- E.
C-C convergent
- F.
O-O transform
- G.
C-C transform
- 4.Where would you expect to find earthquakes and volcanism occurring together?
- A.
O-O divergent
- B.
C-C divergent
- C.
O-O convergent
- D.
O-C convergent
- E.
C-C convergent
- F.
O-O transform
- G.
C-C transform
- 5.Where would you expect to find only earthquakes?
- A.
O-O divergent
- B.
C-C divergent
- C.
O-O convergent
- D.
O-C convergent
- E.
C-C convergent
- F.
O-O transform
- G.
C-C transform
- 6.What type of volcano has alternating layers of lava and pyroclastic materials
- A.
Shield volcano
- B.
Cinder cone
- C.
Stratovolcano
- D.
Volcanic dome
- 7.A (an) ____ eruption is characterized by lava flows through long, nearly vertical cracks in Earth's surface.
- A.
Fissure
- B.
Pyroclastic
- C.
Rhyolitic
- D.
Andesitic basaltic
- 8.Calderas are larger features than craters
- A.
True
- B.
False
- 9.Phenocrysts are solidified fragments of volcanic material that are ejected into the air
- A.
True
- B.
False
- 10.Fumaroles are hot water fountains that spout intermittently
- A.
True
- B.
False
- 11.Which of the following settings is LEAST likely to erupt basaltic lavas
- A.
Oceanic plate subducting underneath oceanic plate
- B.
Oceanic plate diverging from oceanic plate
- C.
Hot spot volcanism
- D.
Oceanic plate subducting underneath continental plate
- 12.A (an) ___ is a torrential flow of wet volcanic debris
- A.
Flank collapse
- B.
Eruption cloud
- C.
Caldera collapse
- D.
Earthquake
- E.
Lahar
- 13.Which of the following items causes the most volcanic related fatalities
- A.
Tsunamis
- B.
Lahars
- C.
Pyroclastic flows
- D.
Ash
- E.
Floods
- 14.Volcanically active areas can be good sources of heat energy for geothermal power
- A.
True
- B.
False
- 15.If all the rocks in a mountain are basalt where would this mountain be
- A.
An ash flow deposit area
- B.
An area with a recent pyroclastic eruption
- C.
An area next to a caldera
- D.
An area near an active geyser field
- E.
A large igneous province area
- 16.A granite formed with 1000 atoms of uranium-238 (a radioactive isotope). The rock now contains 500 atoms of uranium-237. How many half lives of uranium-238 have passed since the rock formed
- A.
0
- B.
1
- C.
2
- D.
3
- E.
4
- 17.The relative age of the granite can be calculated knowing the half life of uranium-238 is 4.5 billion years
- A.
True
- B.
False
- 18.In which eon did humans evolve
- A.
Archean
- B.
Hadean
- C.
Phanerozoic
- D.
Proterozoic
- 19.All eons encompass different amounts of geologic time
- A.
True
- B.
False
- 20.You have identified an erosional surface located between gneiss (below the surface) and limestone (above the surface). What name BEST describes the erosional surface?
- A.
Unconformity
- B.
Disconformity
- C.
Angular unconformity
- D.
Nonconformity
- 21.You have identified a basaltic dike in horizontal layers of a regionally extensive sandstone. what statement best describes the relationship between the dike and the sandstone?
- A.
The dike is younger than the sandstone
- B.
The sandstone is younger than the dike
- C.
The sandstone and the dike are the same age
- 22.What statement best describes the principle of superposition
- A.
Sediments are deposited as essentially horizontal layers
- B.
Inclusions are older than the rocks they are contained in
- C.
Sediments spread out in all directions when they are deposited
- D.
Undisturbed sedimentary layers get younger from bottom to top
- 23.Which of the following represents the smallest division of geologic time
- A.
Eon
- B.
Epoch
- C.
Era
- D.
Period
- 24.A mass extinction is a short period in time in which a small percentage of species dies
- A.
True
- B.
False
- 25.Which of the following can change the rate of radioactive decay
- A.
Changes in temperature
- B.
Chemical reactions
- C.
Changes in pressure
- D.
Nothing changes decay rates
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