Lindsay Daly
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es 1023b final prep

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Lindsay Daly
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ES 1023B final

Question 1 of 47

1

Stress buildup occurs before and after an EQ

Select one of the following:

  • True
  • False

Explanation

Question 2 of 47

1

An EQ is

Select one or more of the following:

  • easy to predict

  • occuring over a plane

  • a release of stress that has been building up

Explanation

Question 3 of 47

1

Stress builds up, is released as an EQ then plate...

Select one of the following:

  • rebounds to a new position and stress begins to accumulate again

  • rebounds to same position and stress begins to accumulate

  • does a jig. help me I'm twitching from coffee

Explanation

Question 4 of 47

1

hypocentre is focus depth

Select one of the following:

  • True
  • False

Explanation

Question 5 of 47

1

surface waves cause damage. There are two types:

Select one or more of the following:

  • Love waves

  • Rayleigh waves

  • Benioff-wadati waves

  • shear waves

  • p-waves

Explanation

Question 6 of 47

1

seismographs measure the movement of the frame relative to the movement of the weight

Select one of the following:

  • True
  • False

Explanation

Question 7 of 47

1

s-p time is time in between s and p waves

Select one of the following:

  • True
  • False

Explanation

Question 8 of 47

1

Distance from epicentre

Select one or more of the following:

  • is basically a p-wave or s-wave curve

  • increases s-p time

  • decreases s-p time

  • can be used to determine magnitude

Explanation

Question 9 of 47

1

where s-p waves intersect is the epicentre

Select one of the following:

  • True
  • False

Explanation

Question 10 of 47

1

Felt intensity is

Select one of the following:

  • amount of damage caused

  • magnitude of the EQ

Explanation

Question 11 of 47

1

elastic straining

Select one of the following:

  • breaks bonds of an atom, and causes an EQ

  • causes bonds to bend, eq releases tension

Explanation

Question 12 of 47

1

The richter scale is a logarithm of s-p times

Select one of the following:

  • True
  • False

Explanation

Question 13 of 47

1

an increase of one on the richter scale corresponds to an increase in magnitude

Select one of the following:

  • 31x

  • 2x

  • 10^x

Explanation

Question 14 of 47

1

MS = log10(A) + 1.656log10(∆) + 1.818

Select one or more of the following:

  • A= angle

  • A=amplitude

  • theta=angle

  • theta=felt intensity

Explanation

Question 15 of 47

1

Moment magnitude is based on energy released and it depends on:

Select one or more of the following:

  • area of fault

  • constrictions of rock type

  • slip of the fault

  • type of fault

  • surface waves

Explanation

Question 16 of 47

1

solidus is the line of pressure vs temperature

Select one or more of the following:

  • it is the line of partial melt

  • it is the line of complete melt

  • it is the line where the rock is a solid

Explanation

Question 17 of 47

1

liquidus is the line of

Select one or more of the following:

  • pressure vs temp for when the minerals are completely melted

  • pressure vs depth when the minerals are completely melted

  • pressure vs temperature for when the minerals are partially melted

Explanation

Question 18 of 47

1

which is a felsic rock?

Select one of the following:

  • andesite

  • rhyolite

  • basalt

Explanation

Question 19 of 47

1

higher silica content

Select one or more of the following:

  • causes higher viscosity

  • causes lower melting point

  • is found in mafic rocks

  • is found in felsic rocks

Explanation

Question 20 of 47

1

when gas is present in lava

Select one or more of the following:

  • the more viscose the lava, the harder it is for the gas to escape, the more explosive the eruption

  • the lowering of the pressure causes bubbles to form, pushing the magma up

  • it evaporates due to the high temperature

  • it creates a hot pocket of gas in the belly of the volcano

Explanation

Question 21 of 47

1

ways to melt plates

Select one or more of the following:

  • plume heating

  • divergent boundaries(decompression)

  • convergent (hydration)

  • transform

  • normal

Explanation

Question 22 of 47

1

plumes rise from the __________________ because they're hotter

Select one of the following:

  • athenosphere

  • lithosphere

  • core-mantle boundary

  • mantle

Explanation

Question 23 of 47

1

effusive eruptions generally:

Select one or more of the following:

  • occur above hot spots

  • are composed of low viscocity magma

  • are basaltic

  • are felsic

  • are found at divergent boundaries

Explanation

Question 24 of 47

1

Pahoehoe lava

Select one or more of the following:

  • has a solid, cooled skin on the surface

  • is 1100-1200C

  • is very and is felsic

  • has low viscosity and is balsaltic

  • is 1000-1100C

Explanation

Question 25 of 47

1

A'a lava

Select one or more of the following:

  • is mafic

  • forms little solid chunks and then is broken up by the still liquid lava

  • is 1000-1100C

  • could have been Pahoehoe

  • is felsic

  • is more liquid

Explanation

Question 26 of 47

1

when decompression occurs

Select one or more of the following:

  • there is reduced pressure, which allows the atoms to vibrate more

  • it is at divergent plate boundaries

  • the decrease in pressure causes the lava to fill the now empty space

  • if the magma moves up fast it can melt as it there is less and less pressure keeping the atoms confined

  • it produces large amounts of new lithosphere

  • it is generally mafic magma which then creates basalt

Explanation

Question 27 of 47

1

when hydration melting occurs

Select one or more of the following:

  • it is at convergent plate boundaries

  • the water in the plate causes the plate to melt at lower temperatures

  • the water at high pressures helps to break the Si-O bonds

  • the geotherm is moved to the left

  • the solidus is moved to the left

Explanation

Question 28 of 47

1

subduction zone volcanism depends on

Select one or more of the following:

  • hydration

  • the angle of subduction

  • the plate boundary

  • the core mantle boundary

Explanation

Question 29 of 47

1

mainly___________ and ___________ erupt at convergent boundaries

Select one of the following:

  • andesite and rhyolite

  • andesite and basalt

  • basalt and rhyolite

Explanation

Question 30 of 47

1

islands arcs are behind the trench

Select one of the following:

  • True
  • False

Explanation

Question 31 of 47

1

A monopole is known to be possible

Select one of the following:

  • True
  • False

Explanation

Question 32 of 47

1

are these right?

Select one of the following:

  • inclination is degree from horizontal, intensity, declination is angle from true north

  • inclination is intensity, declination is degree from horizontal

  • decelnienvraru bvlea echjfd'nuojiawmec .i;oinwce]b[9'

Explanation

Question 33 of 47

1

the eart's magnetic field can't be driven by magnetic iron because

Select one of the following:

  • the high temperature's would surpass iron's curie temperature and it would lose it's magnetism

  • the temperature is too high

  • there is no magnetic field in the core to induce the atoms to align and create a magnetic field

Explanation

Question 34 of 47

1

a dynamo

Select one or more of the following:

  • converts mechanical energy into electrical energy

  • is what powers the earth's core

  • is found in the solar flares

  • is what changes the solidus' slope

Explanation

Question 35 of 47

1

dynamo depends on

Select one or more of the following:

  • speed

  • conductivity of metal

  • size

  • area

  • temperature

Explanation

Question 36 of 47

1

thermal convection in the inner core is caused by

Select one or more of the following:

  • heat transfer from the inner core to the outer core

  • latent heat of formation from the inner core's expansion

  • heat caused by the dynamo

Explanation

Question 37 of 47

1

choose the right pairing

Select one of the following:

  • solar 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

  • solar 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

Explanation

Question 38 of 47

1

northern lights are caused by:

Select one of the following:

  • ions that get excited when trapped in earth's magnetic field

  • the magnetosphere becoming more hot with global warming

  • release of energy from fission of new particles in magnetosphere

Explanation

Question 39 of 47

1

ionospheric fields are caused when charged particles' magnetic fields interact with the magnetic field 80-200 km above the earth

Select one of the following:

  • True
  • False

Explanation

Question 40 of 47

1

when the field strength reaches zero

Select one or more of the following:

  • there can be a polar reversal

  • things can stay the same

  • organisms are introduced to more radiation

Explanation

Question 41 of 47

1

centrifugal force keeps the international space station orbiting the earth by counteracting the normal force

Select one of the following:

  • True
  • False

Explanation

Question 42 of 47

1

gravity in the center of the earth is only dependent on the stuff directly beneath you because

Select one of the following:

  • there is more beneath you, but it's cancelled out by what's above

  • there's more mass above, but the mass below is heavier and cancels it out

  • the mass above is pulling up, which is cancelled out by the mass farther below, pulling down

Explanation

Question 43 of 47

1

apparent gravity is

Select one of the following:

  • the gravity that can be observed

  • the gravity at any point on earth

Explanation

Question 44 of 47

1

gravity is weaker by 0.05 at the equator because

Select one or more of the following:

  • the heat interferes with gravitational field lines

  • earth's oblong shape causes more centrifugal force to be at the equator, counteracting gravity to a small degree

  • there is more mass between earth's core and equator

Explanation

Question 45 of 47

1

isostasy means

Select one of the following:

  • the weight of the mountains is equal to the weight of the displaced mantle

  • that whatever is closest to earth's core will feel more gravity

  • that the more dense mountain condenses the mantle

Explanation

Question 46 of 47

1

depth at which mantle flow occurs is the

Select one of the following:

  • compensation depth

  • moho

  • focus depth

Explanation

Question 47 of 47

1

elevation is dependent on

Select one or more of the following:

  • height

  • density

  • composition

Explanation

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