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8th Grade Plate Tectonics Test Review Flashcards | StudBud
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8th Grade Plate Tectonics Test Review
8th Grade Plate Tectonics Test Review
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8th Grade Plate Tectonics Test Review
Flashcards
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1
Where would the oldest rock be in an ocean basin?
on top of the mid-ocean ridge
farthest from the mid-ocean ridge
inside of the mid-ocean ridge
2
If scientist were able to stop the tectonic plates from moving, we would no longer have:
tides.
changes in season.
earthquakes.
ocean waves.
3
The mvmnt of warm and cooler mantle rocks creates pockets of circulation within mantle called:
conduction points
convection cells
magma flows
density cells
4
Where are earthquakes MOST LIKELY to occur?
along coastal regions
close to the equator
close to the center of tectonic plates
along the boundaries of tectonic plates
5
Which geological features MOST LIKELY prompted the development of theory of plate tectonics?
mountain ranges
river deltas
tropical rainforests
glacier fields
6
The place where 2 plates collide & build new surface features like mountains is called a:
rift zone.
earthquake.
fault.
gap.
7
What is the ACTION FORCE responsible for seafloor spreading?
destruction of ocean crust in trenches
force of ocean crust sitting on the asthenosphere
differences in mass of the ocean and continental plates
instrusive magma forced up toward the ocean ridge
8
Which of these pieces of evidence did NOT help in development of theory of plate tectonics?
most earthquakes and volcanoes occur along distinct lines
No mountains in the world are increasing in size
Outlines of different continents look like they fit together
Similar fossil evidence found on continents far apart
9
Convection currents in Earth's mantle cause plate movement which can cause all EXCEPT:
hurricanes
tsunamis
volcanoes
earthquakes
10
Where is the youngest rock found in an ocean basin?
near deep ocean trenches
top of mid-ocean ridge
sides of mid-ocean ridge
in the mantle
11
Name of the process where a plate sinks into a deep ocean trench is called
melting
divergence
subduction
cooling
12
The convection cycles of the mantle cause movement of what part of the Earth?
crust
core
atmosphere
oceans
13
What was Pangea?
huge mountain range
subduction zone
a large supercontinent
a large ocean basin
14
All of the following are theorized causes of movement of tectonic plates EXCEPT:
convection in the upper man tle
influence of the moon on tides
magma injection at the spreading boundaries
gravity pulling the plates downward at subduction zones
15
The Earth's surface is not a solid surface, but is divided into
continental and crustal plates
several oceanic plates
seven continental plates
continental and oceanic plates
16
In the 1960s the theory of plate tectonics was further developed through the study of
woodland ranges.
river sources.
large canyons.
oceanic trenches
17
As land movement occurred, _____ to form the Appalachian Mountainns.
landmasses came together.
landmasses split.
volcanoes emerged.
earthquakes occurred.
18
Which tectonic plate does Indiana lie on?
Pacific plate
North American plate
Eurasian plate
Nazca plate
19
What causes sea floor spreading?
hurricanes.
magma from convection currents.
gas leaks.
divergent boundaries.
20
Cliffs found off the coast of Ireland were formed when the limestone layers were pushed up by
volcanoes.
landslides.
earthquakes.
faulting.
21
Sea floor spreading could be one reason that:
the continents are drifting apart.
all earthquakes have their epicenters in oceans.
most active volcanoes are found in the Atlantic Ocean.
the Mid-Atlantic ridge is the longest mtn range on Earth
22
Where would an explosive volcano most likely occur?
in the middle of a large plate
where large plates of earth are colliding
near the edge of a large plate of earth
where plates of earth are coming apart
23
Ocean trenches form when two oceanic plates collide and
the younger/less dense plate rides over the edge older plate
the plates are approx. the same age & density
younger/denser of the 2 plates rides ovr edge of older plate
convection currents in mantle force older plate downward
24
A region where the heavier, more dense crust sinks beneath the lighter crust.
convergent continental-continental plate boundary
divergent oceanic-oceanic plate boundary
subduction zone
divergent oceanic-continental plate boundary
25
Geothermal energy is a renewable energy source powered by
radioactive decay inside of earth
plate tectonics
light from the sun
waterfalls
26
Prominent, symmetrical magnetic patterns in rock at sea floor spreading is a direct result of
changes in the Curie point for Basalt
magnetic flux anomalies
changes in polarity of earth's magnetic field
polar wandering
27
All but one of these provides supporting evidence for sea floor spreading EXCEPT:
the presence of unique species in remote locations.
a large # of earthquakes along specific lines within oceans
paleomagnetic reversals in specific ares of the sea floor.
increased thickness in ocean crust away from midocean ridges