Test
ES 1023B final
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Preguntas del test (47)
1Stress buildup occurs before and after an EQ
- AVerdadero
- BFalso
2An EQ is
- Aeasy to predict
- Boccuring over a plane
- Ca release of stress that has been building up
3Stress builds up, is released as an EQ then plate...
- Arebounds to a new position and stress begins to accumulate again
- Brebounds to same position and stress begins to accumulate
- Cdoes a jig. help me I'm twitching from coffee
4hypocentre is focus depth
- AVerdadero
- BFalso
5surface waves cause damage. There are two types:
- ALove waves
- BRayleigh waves
- CBenioff-wadati waves
- Dshear waves
- Ep-waves
6seismographs measure the movement of the frame relative to the movement of the weight
- AVerdadero
- BFalso
7s-p time is time in between s and p waves
- AVerdadero
- BFalso
8Distance from epicentre
- Ais basically a p-wave or s-wave curve
- Bincreases s-p time
- Cdecreases s-p time
- Dcan be used to determine magnitude
9where s-p waves intersect is the epicentre
- AVerdadero
- BFalso
10Felt intensity is
- Aamount of damage caused
- Bmagnitude of the EQ
11elastic straining
- Abreaks bonds of an atom, and causes an EQ
- Bcauses bonds to bend, eq releases tension
12The richter scale is a logarithm of s-p times
- AVerdadero
- BFalso
13an increase of one on the richter scale corresponds to an increase in magnitude
- A31x
- B2x
- C10^x
14MS = log10(A) + 1.656log10(∆) + 1.818
- AA= angle
- BA=amplitude
- Ctheta=angle
- Dtheta=felt intensity
15Moment magnitude is based on energy released and it depends on:
- Aarea of fault
- Bconstrictions of rock type
- Cslip of the fault
- Dtype of fault
- Esurface waves
16solidus is the line of pressure vs temperature
- Ait is the line of partial melt
- Bit is the line of complete melt
- Cit is the line where the rock is a solid
17liquidus is the line of
- Apressure vs temp for when the minerals are completely melted
- Bpressure vs depth when the minerals are completely melted
- Cpressure vs temperature for when the minerals are partially melted
18which is a felsic rock?
- Aandesite
- Brhyolite
- Cbasalt
19higher silica content
- Acauses higher viscosity
- Bcauses lower melting point
- Cis found in mafic rocks
- Dis found in felsic rocks
20when gas is present in lava
- Athe more viscose the lava, the harder it is for the gas to escape, the more explosive the eruption
- Bthe lowering of the pressure causes bubbles to form, pushing the magma up
- Cit evaporates due to the high temperature
- Dit creates a hot pocket of gas in the belly of the volcano
21ways to melt plates
- Aplume heating
- Bdivergent boundaries(decompression)
- Cconvergent (hydration)
- Dtransform
- Enormal
22plumes rise from the __________________ because they're hotter
- Aathenosphere
- Blithosphere
- Ccore-mantle boundary
- Dmantle
23effusive eruptions generally:
- Aoccur above hot spots
- Bare composed of low viscocity magma
- Care basaltic
- Dare felsic
- Eare found at divergent boundaries
24Pahoehoe lava
- Ahas a solid, cooled skin on the surface
- Bis 1100-1200C
- Cis very and is felsic
- Dhas low viscosity and is balsaltic
- Eis 1000-1100C
25A'a lava
- Ais mafic
- Bforms little solid chunks and then is broken up by the still liquid lava
- Cis 1000-1100C
- Dcould have been Pahoehoe
- Eis felsic
- Fis more liquid
26when decompression occurs
- Athere is reduced pressure, which allows the atoms to vibrate more
- Bit is at divergent plate boundaries
- Cthe decrease in pressure causes the lava to fill the now empty space
- Dif the magma moves up fast it can melt as it there is less and less pressure keeping the atoms confined
- Eit produces large amounts of new lithosphere
- Fit is generally mafic magma which then creates basalt
27when hydration melting occurs
- Ait is at convergent plate boundaries
- Bthe water in the plate causes the plate to melt at lower temperatures
- Cthe water at high pressures helps to break the Si-O bonds
- Dthe geotherm is moved to the left
- Ethe solidus is moved to the left
28subduction zone volcanism depends on
- Ahydration
- Bthe angle of subduction
- Cthe plate boundary
- Dthe core mantle boundary
29mainly___________ and ___________ erupt at convergent boundaries
- Aandesite and rhyolite
- Bandesite and basalt
- Cbasalt and rhyolite
30islands arcs are behind the trench
- AVerdadero
- BFalso
31A monopole is known to be possible
- AVerdadero
- BFalso
32are these right?
- Ainclination is degree from horizontal, intensity, declination is angle from true north
- Binclination is intensity, declination is degree from horizontal
- Cdecelnienvraru bvlea echjfd'nuojiawmec .i;oinwce]b[9'
33the eart's magnetic field can't be driven by magnetic iron because
- Athe high temperature's would surpass iron's curie temperature and it would lose it's magnetism
- Bthe temperature is too high
- Cthere is no magnetic field in the core to induce the atoms to align and create a magnetic field
34a dynamo
- Aconverts mechanical energy into electrical energy
- Bis what powers the earth's core
- Cis found in the solar flares
- Dis what changes the solidus' slope
35dynamo depends on
- Aspeed
- Bconductivity of metal
- Csize
- Darea
- Etemperature
36thermal convection in the inner core is caused by
- Aheat transfer from the inner core to the outer core
- Blatent heat of formation from the inner core's expansion
- Cheat caused by the dynamo
37choose the right pairing
- 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 - 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
- Asolar wind= charged particles from the sun
38northern lights are caused by:
- Aions that get excited when trapped in earth's magnetic field
- Bthe magnetosphere becoming more hot with global warming
- 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
- AVerdadero
- BFalso
40when the field strength reaches zero
- Athere can be a polar reversal
- Bthings can stay the same
- Corganisms are introduced to more radiation
41centrifugal force keeps the international space station orbiting the earth by counteracting the normal force
- AVerdadero
- BFalso
42gravity in the center of the earth is only dependent on the stuff directly beneath you because
- Athere is more beneath you, but it's cancelled out by what's above
- Bthere's more mass above, but the mass below is heavier and cancels it out
- Cthe mass above is pulling up, which is cancelled out by the mass farther below, pulling down
43apparent gravity is
- Athe gravity that can be observed
- Bthe gravity at any point on earth
44gravity is weaker by 0.05 at the equator because
- Athe heat interferes with gravitational field lines
- Bearth's oblong shape causes more centrifugal force to be at the equator, counteracting gravity to a small degree
- Cthere is more mass between earth's core and equator
45isostasy means
- Athe weight of the mountains is equal to the weight of the displaced mantle
- Bthat whatever is closest to earth's core will feel more gravity
- Cthat the more dense mountain condenses the mantle
46depth at which mantle flow occurs is the
- Acompensation depth
- Bmoho
- Cfocus depth
47elevation is dependent on
- Aheight
- Bdensity
- Ccomposition
Información
- Descripción
- es 1023b final prep
- Autor
- Lindsay Daly
- Idioma
- English
- Visitas
- 24
- Historial
- Creado el 20 abr 2015 · actualizado el 19 feb 2016
- Etiquetas
- Valoración
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