Geology 1001 - Ch 2
pdf
keyboard_arrow_up
School
University of Minnesota-Twin Cities *
*We aren’t endorsed by this school
Course
1001
Subject
Geology
Date
Apr 3, 2024
Type
Pages
2
Uploaded by ProfHawkPerson2578
Geology 1001 - Ch 2
Study online at https://quizlet.com/_fwryf
1.
active
Continental margins that coincide with plate boundaries are termed ___ margins.
2.
inclination
The angle of the Earth's magnetic field down into the ground toward the North magnetic pole is called the ___
3.
4.5 km, 2.5 km
What are the average depths below the ocean surface to the abyssal plains and the mid-ocean ridges? ___ and ___
4.
paleomagnetism
the magnetic inclination and declination imprinted on a rock at the time of its formation
5.
1280
Mantle rock becomes soft enough to flow at about ___°C
6.
transform
___ faults separate adjoining segments of mid-ocean ridges
7.
hot spot track
A ___ ___ ___ is formed by the periodic eruption of mate-
rial from a mantle hot spot through a plate that is migrating over the Earth's surface.
8.
subducted
Volcanic arcs form wherever oceanic crust is ___.
9.
seamounts
The majority of undersea mountains are comprised of ___.
10.
continental shelves
The regions of sea floor that are relatively flat-lying, adjoin the continents, and are no deeper than approximately ½ km (500 m) are the ___ ___.
11.
farther
Oceanic lithosphere is thicker the ___ one is away from a mid-ocean ridge.
12.
accretionary prism
An accumulation of oceanic sediment that is scraped off the top of a subducting plate is termed an ___ ___.
13.
Alfred Wegener
was a German explorer and geologist who combined in-
formation from multiple continents to support the idea that they had at one time been assembled together in a specific arrangement.
1 / 2
Geology 1001 - Ch 2
Study online at https://quizlet.com/_fwryf
14.
lithosphere
Plates pass by one another over the Earth's surface at transform boundaries, and ___ is neither created nor de-
stroyed at these boundaries.
15.
thinner
Oceanic lithosphere subducts because it is ___ than con-
tinental lithosphere.
16.
Van Allen radia-
tion belts
The ___ ___ ___ ___ trap cosmic rays and shield Earth from excessive radiation; they are located above the at-
mosphere, in space.
17.
bathymetry
The variability in the depths of oceans and seas is called ___
18.
lithosphere
___ includes both the crust and a portion of the upper mantle
19.
earthquakes
___ are the best geologic marker for the three types of plate boundaries.
20.
abyssal plains
___ ___ are the most prevalent feature of ocean ba-
thymetry but are not a component or key feature of plate tectonics.
21.
GPS
___ has provided independent observation of the relative motions of the Earth's crust with respect to one another, and verified Alfred Wegener's hypothesis of continental drift.
22.
geothermal gra-
dient
The rise of hot mantle at mid-ocean ridges results in a higher ___ ___.
23.
divergent
Lithosphere is created at ___-plate boundaries.
24.
peridotite
The most abundant rock in both continental and oceanic lithosphere is ___.
25.
moho
The ___ is the boundary between the crust and the man-
tle.
2 / 2
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help