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WorksheetsGP-L4-5
Total questions: 68
Worksheet time: 34mins
Name
Class
Date
1.
An _______ triple junction will change with time, either to become another form of triple junction, will change geometry or are simply not feasible.
a)
Stable
b)
Unstable
2.
A triple junction is kinematically _______ if the orientation of each plate boundary remains constant relative to other boundaries in the triple junction during a finite time-interval.
a)
Stable
b)
Unstable
3.
The point where the boundaries of three tectonic plates meet
a)
Tetrojunction
b)
Stable Junction
c)
Triple junction
d)
Subduction Zone
4.
What does F stands for in an FRR triple junction?
a)
ridge
b)
transform fault
c)
trench
d)
fault line
5.
What does T stands for in an FFT triple junction?
a)
ridge
b)
transform fault
c)
trench
d)
subduction zone
6.
What does R stands for in an RRR triple junction?
a)
ridge
b)
transform fault
c)
trench
d)
conservative
7.
This triple junction is always stable
a)
RTF
b)
TTR
c)
RRR
d)
FFF
e)
FRR
8.
This triple junction is always unstable
a)
RTF
b)
TTR
c)
RRR
d)
FFF
e)
FRR
9.
A triple junction will be stable if _____ of the velocity lines (Dashed-lines) intersect in a single point
a)
At least 2
b)
3
c)
None
d)
4
10.
A triple junction will be unstable if _____ of the velocity lines (Dashed-lines) intersect in a single point
a)
Less than 3
b)
3
c)
2
d)
None
11.
Galapagos is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
12.
The Galapagos Triple Junction is where the Pacific Plate, Cocos Plate, and Nazca Plate meet
a)
True
b)
False
13.
Afar is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
14.
The Azores Triple Junction is where the North American Plate, the Eurasian Plate and the African Plate meet
a)
True
b)
False
15.
Azores is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
16.
Rodrigues is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
17.
Boso is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
18.
Mendocino triple junction is where the Gorda plate (a south section of the Juan de Fuca Plate), the North American plate, and the Pacific plate meet
a)
True
b)
False
19.
Mendocino is what type of triple junction?
a)
RRR
b)
TTR
c)
FFT
d)
TTT
e)
FRR
20.
It is the only RRR above sea level
a)
Mendocino
b)
Boso
c)
Rodrigues
d)
Afar
21.
Volcanisms from isolated chains are due to ________
a)
Subduction
b)
Mantle
c)
trench
d)
Hotspot
22.
Most volcanisms occur at hotspots
a)
True
b)
False
23.
Isolated sources of magma from the mantle
a)
Subduction
b)
Mantle
c)
trench
d)
Hotspot
24.
Known as the "youngest volcano" in the Hawaiian chain, is an undersea mountain rising more than 3000 meters above the floor of the Pacific Ocean
a)
Kīlauea
b)
Hualālai
c)
Loihi
d)
Mauna Loa
25.
A mostly undersea mountain range in the Pacific Ocean that reaches above sea level in Hawaii.
a)
Hawaian–Emperor seamount chain
b)
Hawaiian–Emperor seamount chain
c)
Emperor seamount chain
d)
Seamount chain
26.
Hotspots can be used to calculate absolute motion of plates
a)
True
b)
False
27.
Hotspots don’t have a fixed position
a)
True
b)
False
28.
Path of hotspot with respect to overlying plate
a)
OVERFLOW LINE
b)
FLOW LINE
c)
HOTSPOT TRACK
d)
HOTSPOT PATH
29.
Movement of plate with respect to hotspot
a)
OVERFLOW LINE
b)
FLOW LINE
c)
HOTSPOT TRACK
d)
HOTSPOT PATH
30.
The general direction of the Pacific plate is _______.
a)
Northwest
b)
Southeast
c)
Southwest
d)
Northeast
31.
Magnetism is not useful in determining past plate motions
a)
True
b)
False
32.
IGRF
a)
International Geographic Reference Features
b)
International Geomagnetic Radiating Field
c)
International Geographic Reference Field
d)
International Geomagnetic Reference Field
33.
Geomagnetic Field is a vector quantity
a)
True
b)
False
34.
GEOMAGNETIC NORTH is where the N compass needle points
a)
True
b)
False
35.
Magnetic field that envelops the Earth
a)
Magnetsphere
b)
Magnetosphere
c)
troposphere
d)
Magneticalsphere
36.
Earth's magnetic field is almost the same shape as the magnetic field around a bar magnet, so it is called a _______
a)
Bipole
b)
Polar
c)
Dipole
d)
Bar magnet-like
37.
The dipolar magnetic field protects us from solar wind
a)
True
b)
False
38.
TRUE NORTH is not same as GEOGRAPHIC NORTH
a)
True
b)
False
39.
The difference between Earth’s magnetic field and best dipole fitted inside Earth
a)
DECLINATION
b)
BEST DIPOLE FIELD
c)
DIPOLE FIELD
d)
NON – DIPOLE FIELD
40.
Best fitting dipole is _____ from the geographic pole
a)
10.5◦
b)
13.5◦
c)
11.5◦
d)
3.5◦
41.
Point on surface of the Earth where the best fitting dipole intersects
a)
MAGNETIC DIPOLE
b)
GEOMAGNETIC POLE
c)
GEOMAGNETIC EQUATOR
d)
MAGNETIC EQUATOR
42.
Magnetic field is horizontal
a)
MAGNETIC DIPOLE
b)
GEOMAGNETIC POLE
c)
GEOMAGNETIC EQUATOR
d)
MAGNETIC EQUATOR
43.
Equator of best fitting dipole
a)
MAGNETIC DIPOLE
b)
GEOMAGNETIC POLE
c)
GEOMAGNETIC EQUATOR
d)
MAGNETIC EQUATOR
44.
Magnetic field is vertical
a)
MAGNETIC DIPOLE
b)
GEOMAGNETIC POLE
c)
GEOMAGNETIC EQUATOR
d)
MAGNETIC EQUATOR
45.
SOLAR WIND are nonionizing particles from the sun
a)
True
b)
False
46.
Turbulent zone within bow shock
a)
MAGNETOTAIL
b)
BOW SHOCK
c)
MAGNETOSHEATH
d)
MAGNETOPAUSE
47.
Long tail of the magnetosphere. Opposite side from the solar wind
a)
MAGNETOTAIL
b)
BOW SHOCK
c)
MAGNETOSHEATH
d)
MAGNETOPAUSE
48.
Shock wave formed by solar wind interacting with MF
a)
MAGNETOTAIL
b)
BOW SHOCK
c)
MAGNETOSHEATH
d)
MAGNETOPAUSE
49.
Boundary of magnetosheath
a)
MAGNETOTAIL
b)
BOW SHOCK
c)
MAGNETOSHEATH
d)
MAGNETOPAUSE
50.
Causes magnetic storms.
a)
VAN ALLEN RADIATION BELT
b)
SUN SPOT ACTIVITIES
c)
DIURNAL VARIATION
d)
MAGNETIC STORMS
51.
Short term fluctuations of Earth's Magnetic Field
a)
VAN ALLEN RADIATION BELT
b)
SUN SPOT ACTIVITIES
c)
DIURNAL VARIATION
d)
MAGNETIC STORMS
52.
Zones of magnetic field where ionizing particles are trapped. This also gives challenge to Rocket Launching
a)
VAN ALLEN RADIATION BELT
b)
SUN SPOT ACTIVITIES
c)
DIURNAL VARIATION
d)
MAGNETIC STORMS
53.
Daily variations of the Earth’s MF (<0.5)
a)
VAN ALLEN RADIATION BELT
b)
SUN SPOT ACTIVITIES
c)
DIURNAL VARIATION
d)
MAGNETIC STORMS
54.
Southern Lights
a)
Aurora Borealis
b)
Aurora Australis
c)
Aurora Australiz
d)
Aurora Burealis
55.
Northern Lights
a)
Aurora Borealis
b)
Aurora Australis
c)
Aurora Australiz
d)
Aurora Burealis
56.
Angle of geographic N & magnetic N
a)
Angle of Tilt
b)
Angle of Inclination
c)
Angle of Repose
d)
Angle of Deviation
57.
Hartmann – needles magnetized would point N, but would be tilted from
a)
vertical
b)
horizontal
c)
both 1 and 2
d)
none
58.
Who found that declination varies from one place to another during 14th century?
a)
European mariners
b)
European miners
c)
European machiners
d)
European dynasty
59.
Europeans thought compasses were pointing towards the
a)
South Star
b)
West Star
c)
East Star
d)
North Star
60.
What dynasty was simple compasses were invented?
a)
Zhou Dynasty
b)
Qin Dynasty
c)
Han Dynasty
d)
Tang Dynasty
61.
Early compasses were spoon-like but they developed the
a)
brunton compass
b)
needle-like compass
c)
baseplate compass
d)
lnsatic compass
62.
Greek word for magnetism
a)
Magenta
b)
Magentum
c)
Magnetum
d)
Magante
63.
High supply of lodestones
a)
Magnesium Colony
b)
Magenta Colony
c)
Magnesia Colony
d)
Magnetic Colony
64.
Angle between the earth's surface and the magnetic field lines
a)
Magnetic Dipole
b)
Magnetic declination
c)
Magnetic inclination
d)
Geomagnetic Pole
65.
Known as Angle of Deviation
a)
Magnetic Dipole
b)
Magnetic declination
c)
Magnetic inclination
d)
Geomagnetic Pole
66.
During this dynasty, magnetic north was not the same as astronomically defined north
a)
Zhou Dynasty
b)
Qin Dynasty
c)
Han Dynasty
d)
Tang Dynasty
67.
Known as Angle of Tilt
a)
Magnetic Dipole
b)
Magnetic declination
c)
Magnetic inclination
d)
Geomagnetic Pole
68.
Angle between the magnetic north of the compass and the true north
a)
Magnetic inclination
b)
Geomagnetic Pole
c)
Magnetic Dipole
d)
Magnetic declination
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