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ES 1023B final

Lindsay Daly 47 questions Updated 19 Feb 2016

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1Stress buildup occurs before and after an EQ
1. ATrue
2. BFalse
2An EQ is
1. Aeasy to predict
2. Boccuring over a plane
3. Ca release of stress that has been building up
3Stress builds up, is released as an EQ then plate...
1. Arebounds to a new position and stress begins to accumulate again
2. Brebounds to same position and stress begins to accumulate
3. Cdoes a jig. help me I'm twitching from coffee
4hypocentre is focus depth
1. ATrue
2. BFalse
5surface waves cause damage. There are two types:
1. ALove waves
2. BRayleigh waves
3. CBenioff-wadati waves
4. Dshear waves
5. Ep-waves
6seismographs measure the movement of the frame relative to the movement of the weight
1. ATrue
2. BFalse
7s-p time is time in between s and p waves
1. ATrue
2. BFalse
8Distance from epicentre
1. Ais basically a p-wave or s-wave curve
2. Bincreases s-p time
3. Cdecreases s-p time
4. Dcan be used to determine magnitude
9where s-p waves intersect is the epicentre
1. ATrue
2. BFalse
10Felt intensity is
1. Aamount of damage caused
2. Bmagnitude of the EQ

11elastic straining
1. Abreaks bonds of an atom, and causes an EQ
2. Bcauses bonds to bend, eq releases tension
12The richter scale is a logarithm of s-p times
1. ATrue
2. BFalse
13an increase of one on the richter scale corresponds to an increase in magnitude
1. A31x
2. B2x
3. C10^x
14MS = log10(A) + 1.656log10(∆) + 1.818
1. AA= angle
2. BA=amplitude
3. Ctheta=angle
4. Dtheta=felt intensity
15Moment magnitude is based on energy released and it depends on:
1. Aarea of fault
2. Bconstrictions of rock type
3. Cslip of the fault
4. Dtype of fault
5. Esurface waves
16solidus is the line of pressure vs temperature
1. Ait is the line of partial melt
2. Bit is the line of complete melt
3. Cit is the line where the rock is a solid
17liquidus is the line of
1. Apressure vs temp for when the minerals are completely melted
2. Bpressure vs depth when the minerals are completely melted
3. Cpressure vs temperature for when the minerals are partially melted
18which is a felsic rock?
1. Aandesite
2. Brhyolite
3. Cbasalt
19higher silica content
1. Acauses higher viscosity
2. Bcauses lower melting point
3. Cis found in mafic rocks
4. Dis found in felsic rocks
20when gas is present in lava
1. Athe more viscose the lava, the harder it is for the gas to escape, the more explosive the eruption
2. Bthe lowering of the pressure causes bubbles to form, pushing the magma up
3. Cit evaporates due to the high temperature
4. Dit creates a hot pocket of gas in the belly of the volcano
21ways to melt plates
1. Aplume heating
2. Bdivergent boundaries(decompression)
3. Cconvergent (hydration)
4. Dtransform
5. Enormal
22plumes rise from the __________________ because they're hotter
1. Aathenosphere
2. Blithosphere
3. Ccore-mantle boundary
4. Dmantle
23effusive eruptions generally:
1. Aoccur above hot spots
2. Bare composed of low viscocity magma
3. Care basaltic
4. Dare felsic
5. Eare found at divergent boundaries
24Pahoehoe lava
1. Ahas a solid, cooled skin on the surface
2. Bis 1100-1200C
3. Cis very and is felsic
4. Dhas low viscosity and is balsaltic
5. Eis 1000-1100C
25A'a lava
1. Ais mafic
2. Bforms little solid chunks and then is broken up by the still liquid lava
3. Cis 1000-1100C
4. Dcould have been Pahoehoe
5. Eis felsic
6. Fis more liquid
26when decompression occurs
1. Athere is reduced pressure, which allows the atoms to vibrate more
2. Bit is at divergent plate boundaries
3. Cthe decrease in pressure causes the lava to fill the now empty space
4. Dif the magma moves up fast it can melt as it there is less and less pressure keeping the atoms confined
5. Eit produces large amounts of new lithosphere
6. Fit is generally mafic magma which then creates basalt
27when hydration melting occurs
1. Ait is at convergent plate boundaries
2. Bthe water in the plate causes the plate to melt at lower temperatures
3. Cthe water at high pressures helps to break the Si-O bonds
4. Dthe geotherm is moved to the left
5. Ethe solidus is moved to the left
28subduction zone volcanism depends on
1. Ahydration
2. Bthe angle of subduction
3. Cthe plate boundary
4. Dthe core mantle boundary
29mainly___________ and ___________ erupt at convergent boundaries
1. Aandesite and rhyolite
2. Bandesite and basalt
3. Cbasalt and rhyolite
30islands arcs are behind the trench
1. ATrue
2. BFalse
31A monopole is known to be possible
1. ATrue
2. BFalse
32are these right?
1. Ainclination is degree from horizontal, intensity, declination is angle from true north
2. Binclination is intensity, declination is degree from horizontal
3. Cdecelnienvraru bvlea echjfd'nuojiawmec .i;oinwce]b[9'
33the eart's magnetic field can't be driven by magnetic iron because
1. Athe high temperature's would surpass iron's curie temperature and it would lose it's magnetism
2. Bthe temperature is too high
3. Cthere is no magnetic field in the core to induce the atoms to align and create a magnetic field
34a dynamo
1. Aconverts mechanical energy into electrical energy
2. Bis what powers the earth's core
3. Cis found in the solar flares
4. Dis what changes the solidus' slope
35dynamo depends on
1. Aspeed
2. Bconductivity of metal
3. Csize
4. Darea
5. Etemperature
36thermal convection in the inner core is caused by
1. Aheat transfer from the inner core to the outer core
2. Blatent heat of formation from the inner core's expansion
3. Cheat caused by the dynamo
37choose the right pairing
1. Asolar wind= charged particles from the sun
  magnetosphere= area in which charged particles are still affected by the earth's magnetic field
  magnetotail= part of magnetosphere that is pushed away by solar winds
2. Bsolar wind=part of magnetosphere that is pushed away
  magnetosphere= charged particles from the sun
  magnetotail= area in which charged particles are still affected by the earth's magnetic field
38northern lights are caused by:
1. Aions that get excited when trapped in earth's magnetic field
2. Bthe magnetosphere becoming more hot with global warming
3. Crelease of energy from fission of new particles in magnetosphere
39ionospheric fields are caused when charged particles' magnetic fields interact with the magnetic field 80-200 km above the earth
1. ATrue
2. BFalse
40when the field strength reaches zero
1. Athere can be a polar reversal
2. Bthings can stay the same
3. Corganisms are introduced to more radiation
41centrifugal force keeps the international space station orbiting the earth by counteracting the normal force
1. ATrue
2. BFalse
42gravity in the center of the earth is only dependent on the stuff directly beneath you because
1. Athere is more beneath you, but it's cancelled out by what's above
2. Bthere's more mass above, but the mass below is heavier and cancels it out
3. Cthe mass above is pulling up, which is cancelled out by the mass farther below, pulling down
43apparent gravity is
1. Athe gravity that can be observed
2. Bthe gravity at any point on earth
44gravity is weaker by 0.05 at the equator because
1. Athe heat interferes with gravitational field lines
2. Bearth's oblong shape causes more centrifugal force to be at the equator, counteracting gravity to a small degree
3. Cthere is more mass between earth's core and equator
45isostasy means
1. Athe weight of the mountains is equal to the weight of the displaced mantle
2. Bthat whatever is closest to earth's core will feel more gravity
3. Cthat the more dense mountain condenses the mantle
46depth at which mantle flow occurs is the
1. Acompensation depth
2. Bmoho
3. Cfocus depth
47elevation is dependent on
1. Aheight
2. Bdensity
3. Ccomposition

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Description: es 1023b final prep
Author: Lindsay Daly
Language: English
Views: 24
History: Created on 20 Apr 2015 · updated on 19 Feb 2016
Tags: earth science first-year university
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ES 1023B final

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