# plz help me check my assignment answers.

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Max
S1 + S2 + S3 + S4
22.37IS + 14.88LC + 19.45MC + 13.79SC + 7.29IB > = 3
26.73IS + 18.61LC + 18.04MC + 11.33SC + 8.05IB > =
6.46IS + 10.52LC + 5.91MC – 2.07SC + 9.18IB > = 3
-3.19IS + 5.25LC – 1.94MC + 6.85SC + 3.92IB> = 3
IS + LC + MC + SC + IB = 1
IS, LC, MC, SC, IB > 0
s1
3
s2
s3
s4

Use the figure above to answer this question. Point A is at 100 ft elevation, Point D is at 220 ft
elevation. The contour interval is ________________.
10 ft
20 ft
30 ft
40 ft
If the contour interval is 30 ft and the elevation of Point F is 190 ft, what is the elevation of Point
E?
280 ft
340 ft
160 ft
220 ft
Use the figure above to answer this question. Which route is the steepest?
Point A to Point B
Point F to Point E
Point A to Point C
all routes are equally steep
Assume the contour interval is 30 ft. Use the figure above to answer this question. Determine the
slope from Point B to Point D.
Slope < 1% 1% < Slope < 5% 5% < Slope < 10% Slope > 10%

Use the figure above to answer this question. This map has what type of scale?
verbal
numerical
ratio
graphical

If you want to view the maximum detail, you would choose a map with _________ scale.
small
fish
intermediate
large

A scale of 1:24,000 on a map means ___________________.
1 inch on the map equals 24,000 inches in the real world.
1 cm on the map equals 24,000 cm in the real world.
1 meter on the map equals 24,000 meters in the real world.
all of the choices are correct.

The most explosive volcanoes (aside from the supervolcanoes) tend to be found at ________ plate
boundaries.
convergent
divergent
transform
all of the choices are correct

Which type of fault involves 2 blocks of rock sliding horizontally past each other?
strike-slip
normal
reverse
all of the choices are correct

The _______________ is brittle and this mechanical behavior explains why most ___________
occur in this layer.
lithosphere; earthquakes
continental crust; volcanoes
oceanic crust; tsunami
none of the choices are correct

Shield volcanoes have ____________ slopes, due to long-term eruptions of ______________
lava.
steep; high viscosity
flat; high viscosity
steep; low viscosity
gentle; low viscosity

The 4As of mitigation are ___________________.
accept, avoid, anticipate, alter
aggravate, actuate, agitate, alleviate
approve, arrive, aversion, attention

Use the figure above to answer this question. Layer D is the _______________________.
Outer Core
Mantle
Asthenosphere
Mesosphere

Use the figure above to answer this question. Layer H is the _______________________.
Outer Core
Crust
Asthenosphere
Mesosphere

Exam1_Layers.pngUse the figure above to answer this question. Layers F-H are defined by
______________ properties.
topographic
mechanical
gravitational
mineral and chemical

Volcanic eruptions are often preceded by _______________.
small earthquakes.
ground deformation and surface movements.
gas emissions.
all of the choices are correct

The last eruption of Mt Vesuvius in Italy was in 79 CE. This volcano is considered
________________.
active
dormant
extinct
unknown

You are most likely to find a stratovolcano (composite cone) ________________.
on Hawaii.
on Iceland.
on the west coast of South America.
at all of the above locations.

Consider the figure above in answering this question. Seismic waves are generated at
_______________ by the earthquake, but because they travel at different speeds, they arrive at the
surface of the earth at ________________.
different locations; a constant rate.
different times; the same time.
the fault; the seismogram.
the same time; different times.

Use the figure above to answer this question. Dashed line 1 marks the arrival of the ___________.
Rayleigh wave
P-wave
Love wave
S-wave

In the 2015 movie San Andreas, seismologist Lawrence Hayes (played by Paul Giamatti) states
that an earthquake ” …will be so big, that even though it’s happening here in California, you will
feel it on the East Coast.” However, you know this statement to false based on observations that
seismic waves lose energy due to _______________ with distance.
intensity
gravity
magnitude
attenuation

Most volcanic features occur _________________.
in the middle of the tectonic plates.
at transform plate boundaries.
at convergent and divergent plate boundaries.
evenly distributed over the Earth’s surface.

You are walking along a path that perfectly follows a contour line on a map. Therefore, you are
walking __________.
downhill.
uphill.
at a constant elevation.
into a giant pit of mud.

A river on the surface (blue line) is displaced horizontally
by a fault in the image. What type of fault is this?
normal
reverse
right lateral
left lateral

Southern California (USA) is _______________.
very far from a plate boundary.
on a divergent plate boundary.
on a convergent plate boundary.
on a transform plate boundary.

If you are standing on UC Irvine campus, you are on the ____________________.
Pacific plate
South American plate
Juan de Fuca plate
California plate

The type of volcanic features that produce the most basaltic lava and are associated with at least
one mass extinction in Earth’s history are ______________.
flood basalts.
fissures.
stratovolcanoes.
composite cones.

Which of the following is one of the current fundamental energy sources for plate tectonics?
meteorite impacts in the last 100 years
volcanic eruptions

The figure above shows a tree and a fault. What type of fault is this?
normal
reverse
right lateral
left lateral

Use the figure above to answer this question. Feature A is a(n) _______________________.
lahar
pyroclastic flow
debris avalanche
volcanic bomb
Use the figure above to answer this question. Which feature is
typically responsible for most deaths in a volcanic eruption?
A
B
C
E

The heaviest material in the earth tends to be located ______________.
in the atmosphere.
in the crust.
in the mantle.
in the core.

During an earthquake, if you are in a relatively new building in California, you should
___________.
try to run outside.
take cover in a doorway.
get next to a table, chair, or desk, but don’t get underneath it.
get underneath a table, chair, or desk, and hang on.

Use the figure above to answer this question. An Icelandic style eruption [A1] has
________________ [A2].
high water content, low viscosity
low water content, high viscosity
low water content, low viscosity
low water content, high viscosity

Exam1_Eruption.png
Use the figure above to answer this question. A Plinian style eruption [E1] has ________________
[E2].
high water content, low viscosity
high water content, high viscosity
low water content, low viscosity
low water content, high viscosity

Liquefaction describes when ____________________.
shaking causes solid ground to become mud.
hard rock amplifies ground shaking
small earthquakes occur with higher frequency than large earthquakes
all of the choices are correct

The place where an earthquake starts at depth is called the ____________________.
footwall.
hanging wall.
epicenter.
hypocenter.

Which of the following is the safest place (with respect to earthquake safety) to build a house?
on loosely compacted, soft rock
on soft muds near a harbor
on solid rock
in the middle of a sedimentary basin
You inspect the rocks found at volcanic island Y and determine them to be a black rock known as
basalt. From this information, you can infer that the eruption was composed of
explosive, high viscosity lava flows representing higher volcanic risk
widespread, high viscosity lava flows representing lower volcanic risk
local, high viscosity and high volatile lava flows representing higher volcanic risk
widespread, low viscosity lava flows representing lower volcanic risk
Use the figure above to answer this question. This
volcanic chain of islands was formed by a hotspot. Island X is 15 million years (Ma) old and
island Z is 2 million years old. Measuring from the approximate center of the islands, determine
0.04 cm/yr
3 cm/yr
15 cm/yr
600 cm/yr

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