Study Guide for the Geology Unit Test 2013 – 2014
1] The second most common element found in the Earth’s crust is
a] aluminum.
b] iron.
c] oxygen.
d] silicon.
2] The Earth’s core is made mostly of the element
a] aluminum.
b] iron.
c] oxygen.
d] silicon.
3] Which of the following is the most common element in the Earth’s crust?
a] aluminum – Al
b] iron – Fe
c] oxygen – O
d] silicon – Si
4] Igneous rocks form from
a] magma.
b] preexisting rocks.
c] sediments.
d] none of the answers listed above.
5] Sedimentary rocks form from
a] magma.
b] preexisting rocks.
c] sediments.
d] none of the answers listed above.
6] Metamorphic rocks form from
a] magma.
b] preexisting rocks.
c] sediments.
d] none of the answers listed above.
7] Which of the following is NOT a property of minerals?
a] inorganic
b] man-made
c] natural
d] solid
8] The heat inside the Earth is
a] caused by radioactive decay.
b] leftover from the formation of the Earth.
c] produced by the Sun.
d] None of these answers is correct.
9] Which type of volcanic rock would be described with words like black, dark, and mafic?
a] andesite
b] basalt
c] dacite
d] rhyolite
10] Evidence or remains of once living things found in rocks are called
a] clasts.
b] fossils.
c] minerals.
d] pebbles.
11] What type of rock is serpentinite, the California State Rock?
a] metamorphic
b] plutonic
c] sedimentary
d] volcanic
12] The outermost PHYSICAL layer of the earth is called the
a] asthenosphere.
b] crust.
c] lithosphere.
d] mantle.
13] The boundary between the crust and the mantle is named for which of the following scientists?
a] Mercalli
b] Mohorovičić
c] Richter
d] Wegener
14] Which of the following layers is in the liquid state?
a] asthenosphere
b] inner core
c] lithosphere
d] outer core
12] Which of the following layers is broken up into plates?
a] asthenosphere
b] inner core
c] lithosphere
d] outer core
13] La Habra High School is located on the
a] Juan de Fuca plate.
b] North American plate.
c] Pacific plate.
d] Rivera plate.
14] The San Andreas fault is a
a] plate boundary.
b] strike-slip fault.
c] transform boundary.
d] All of the answers above are correct.
15] Which of the following convergent plate boundaries is NOT a subduction zone?
a] Indian plate meets the Eurasian plate [at the Himalayas]
b] Juan de Fuca plate meets the North American plate
c] Nazca plate meets the South American plate
d] Pacific plate meets the North American plate [at Japan]
16] Which of the following islands [or groups of islands] is the only place on the Earth where you can stand on a piece of the midocean ridge and be above the level of the ocean?
a] Iceland
b] Indonesia
c] Japan
d] Santa Catalina Island
17] Oceanic crust has a composition of a rock called
a] basalt.
b] granite.
c] peridotite.
d] rhyolite.
18] Which of the following faults/plate boundaries does NOT meet at the Cape Mendocino triple junction?
a] Cascadia Subduction Zone
b] East Pacific Rise
c] Mendocino Fracture Zone
d] San Andreas Fault
19] The San Andreas Fault is primarily what kind of plate boundary?
a] convergent
b] dinner
c] divergent
d] transform
20] Which of the following would you be least likely to find at a convergent plate boundary?
a] a chain of stratovolcanoes
b] a deep ocean trench
c] a folded and faulted mountain range
d] a long strike-slip fault
21] Which of the following types of plate boundary would you NOT find in California?
a] convergent
b] divergent
c] transform
d] All three types of plate boundary are found in California.
22] The last time ALL the continents on Earth were together in one
supercontinent was starting around 300 million years ago. Scientists call this supercontinent
a] Gondwana.
b] Pannotia.
c] Pangaea.
d] Rodinia.
23] Which of the following California mountain ranges is a chain of volcanoes currently being caused by subduction?
a] Cascades
b] Coast Ranges
c] San Gabriels
d] Sierra Nevadas
24] The last volcano to erupt in the State of California was
a] Amboy Crater.
b] Lassen Peak.
c] Long Valley Caldera.
d] Mt. Shasta.
25] Molten rock is called
a] dacite.
b] lava.
c] magma.
d] pyroclastic.
26] Which of the following volcanic rocks usually forms from the lowest viscosity magmas?
a] andesite
b] basalt
c] dacite
d] rhyolite
27] The Hawaiian word for a smooth, ropy lava flow is
a] aa.
b] kilauea.
c] pahoehoe.
d] tephra.
28] Which of the following is the most common volcanic gas?
a] carbon dioxide
b] hydrogen chloride
c] sulfur dioxide
d] water vapor
29] Which of the following volcanic hazards would be the most disruptive to air travel?
a] eruption column
b] lahar
c] lava flow
d] pyroclastic flow
MATCHING Match the volcano to its type.
30] Amboy Crater
31] Lassen Peak
32] Long Valley Caldera
33] Mt. Shasta
Answers for questions 30] through 33]:
a] caldera
b] cinder cone
c] lava dome
d] stratovolcano
34] What is the minimum number of seismograph readings needed to locate the epicenter of an earthquake?
a] 1
b] 2
c] 3
d] 4
35] Approximately how many times more energy does a 9.0 Mw earthquake release than a 8.0 Mw earthquake?
a] 1x
b] 10x
c] 33x
d] 100x
36] Which of the following faults is NOT partially or completely located in southern California?
a] Hayward Fault
b] San Andreas Fault
c] San Jacinto Fault
d] Whittier Fault
37] Which type of fault is pictured above?
a] normal fault
b] reverse fault
c] thrust fault
d] strike-slip fault
38] Which type of fold is pictured above?
a] anticline
b] syncline
c] Both of the above.
d] None of the above.