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9th grade Earth Science Quiz on Tectonics
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1
This image is the lithospheric plate moving over on large magma chamber, what is this called?
shield
divergence
composite
hot spot
2
Convection currents, responsible for the movement of lithospheric plates are found in the __.
rift valley
lithosphere
asthenosphere
terraces
3
How does the subduction of crustal plates influence the rock cycle?
pressure forms metamorphic rock
parent material is provided for weathering & erosion
melting of rock layers form igneous rock
compaction forms sedimentary rock
4
What is it called when land is pulled apart?
volcanic island arc
continental mountains
continental rift
oceanic trench
5
The San Andreas Fault, a result of horizontal shear, is a _____ fault.
strike-slip
blind
normal
reverse
6
When seafloor spreading occurs, the plate eventually subducts making a _______.
rift valley
new ocean crust
deep ocean sea trench
very tall mountains
7
Most volcanoes occur ____.
far from tectonic plate boundaries
along divergent boundaries
along convergent boundaries
randomly
8
What kind of magma would you find in a shield volcano?
oceanic ridge
basalt
cinder
rhyolite
9
Most of Earth's EQ's, volcanoes, & mountain building occur
at volcanic island arcs
in the Himalayas
at plate boundaries
in the center of continents
10
What is the hotter zone beneath the lithosphere that behaves live water, but is a solid?
inner core
outer core
crust
asthenosphere
11
Which would produce the worst earthquake along the surface?
a deep focus w a magnitude of 2.5
a shallow focus w a magnitude of 2.5
a shallow focus w a magnitude of 4.5
a deep focus w a magnitude of 4.5
12
What kind of plate boundary is in the picture?
convergent
subduction
transform
divergent
13
Continental drift was not widely accepted when it was proposed because ______?
Wegner couldn't explain why or how continents moved
magnetic data proved that Wegener was wrong
mantle convection currents didn't exsist at the time
continental landmasses were too big to move
14
A volcano that is found on a contiental/continental plate boundary is what kind of a volcano?
composite/strata
shield
volcanic ridge
cinder
15
Deaths associated w earthquakes in sloping areas can result from ____.
surface ruptures
fault scarps
tsunamis
landslides
16
What do you get from the time differences between the seismic p & s waves on a graph?
duration of an earthquake
intensity of an earthquake
epicenter of an earthquake
magnitude of an earthquake
17
The existence of a huge landmass, proposed by Wegner is called ____.
pangaea
rift valley
panthalassa
mesosaurus
18
Why are seismic waves of an earthquake stronger at the epicenter of an earthquake?
most faults converge at the epicenter
the epicenter is directly above the focus
crustal plates rise & fall with an earthquake
millions of small movements occur here
19
The youngest part of the ocean floor is found _____.
where ocean sediments are thickest
along deep sea trenches
ocean ridges
where Earth's magnetic field changes polarity
20
Alfred Wegener is best known for what hypothesis?
subduction
continental drift
seafloor spreading
plate tectonics
21
The magnetic pattern of ocean-floor rocks on one side of an ocean ridge is ____
younger than on the other side
much different from the magnitic pattern found on land
at right angles to the ocean ridge
a mirror image of the other side
22
What kind of a structure can form as a result of divergent plate boundaries?
continental volcanic arc
a mid-oceanic ridge
continental mountains
an oceanic trench
23
The existence of coal beds in Antarctica indicates that the continent once had _____.
a temperate, rainy climate
a cold, dry climate
been farther from the equator
been part of Africa
24
The Himalayas are the result of
continental-continental convergence
oceanic-oceanic convergence
continental volcanic arcs
hot spots
25
How were these mountains formed?
earth quakes
tectonic collisions
sedimentation
tension
26
What kind of a volcano would you find in the ocean (oceanic/oceanic)?
cinder
composite/strata
shield
oceanic ridge
27
What structure can form as a result of a divergent plate boundary?
oceanic trench
continental mountain
continental volcanic arc
mid-ocean ridge
28
Most deep-focus earthquakes are linked to
ocean trenches
transform boundaries
hot spots
ocean ridges
29
What kind of tectonic boundary is in the picture?
convergent
divergent
transform
basaltic
30
What name did Wegener give to a supercontinent proposed before the current continents
Panamerica
Pangaea
Atlantis
Euroamerica
31
What is the plate boundary in this picture?
transform
convergent
divergent
subduction
