NEW
Font size
WorksheetsPLATE TECTONICS
Total questions: 37
Worksheet time: 19mins
Subduction is
the process by which more dense oceanic crust sinks (like a SUBmarine) beneath a less dense crust forming deep ocean trenches
the direct transfer of heat through solid materials
the process that continually adds new ocean floor
a device that bounces sound waves off of underwater objects
Earth's lithosphere is broken into seperate sections called
trenches
plates
faults
rifts
Who first proposed the hypothesis of continental drift?
Harry Hess
Alfred Wegener
Albert Einstein
Alexander Volta
A place where 2 plates slip past (side by side) each other in opposite directions is
divergent boundry
subduction zone
convergent boundrty
transform boundry
Convection currents take place in the
lithosphere
outer core
mesosphere
asthenoshpere
The process that continually adds new material to the ocean floor is
erosion
conduction
sea-floor spreading
subduction
Scientists rejected Wegener's hypothisis because he could not
explain why continental crust sinks beneath trenches
describe the climate of Pangea
explain what force pushes and pulls continents
describe how seeds moved from Africa to South America
What type of plate boundry is located where two plates move away (divide) from each other?
transform
convergent
divergent
subduction
The supercontinent that began to break apart about 225 million years ago is called
Australia
Eurasia
Pangea
Africa
A vast, underwater mountain chain is called
deep-sea trench
ocean floor sediment
mid-ocean ridge
oceanic crust
What is the theory that Earth's plates are in constant slow motion due to forces deep inside the Earth?
Sea Floor Spreading
Plate Tectonics
Continental Drift
Superposition
When an oceanic plate (more dense) and a continental plate (less dense), converge which of the following will happen?
Hint (converge = collide)
The Oceanic plate will be subducted under the continental plate
The continental plate will be subducted under the oceanic plate
The sea floor will spread
A mid-ocean ridge will form
The most active earthquake areas are associated with the boundries of the lithospheric plates. Identify one geologic event, other than an earthquake, that may also occur in these areas.
hurricanes
sea floor spreading
volcanoes
folded mountains
As the oceanic crust moves away from the mid-ocean ridge
it melts and thins
it cools and becomes more dense
it becomes a liquid
it freezes
When 2 continental plates (both the same density) converge, what feature is likely to be formed?
Hint (converge = collide)
A mid-ocean ridge
A subduction zone
A mountain range
A rift valley
The youngest rocks on the ocean floor are located where?
near continents
at mid-ocean ridges
near Asia
far from mid-ocean ridges
Convection currents in Earth's mantle are believed to be responsible for
Hint (what are the convection currents under?)
ocean currents
crustal plate movements
climatic changes
uneven surface heating
The continental crust is made up of
granite
basalt
The oceanic crust is made up of
Hint (what type of water is in the ocean?)
granite
basalt
The convergent boundry where an older, more dense oceanic plate subducts underneath a younger oceanic plate forms a
transform boundry
deep ocean trench
plate tectonics
mid-ocean ridge
A fault is
a break or crack in the Earth's crust
a trench in the ocean
the area surrounding a volcano
the layer of rock that forms Earth's outer surface
The inner core is
a layer of molten nickle and iron that surrounds the mantle
the layer of hot, solid material between the crust and the core
the most dense layer of the Earth consisting of solid nickle and iron
a layer of the Earth which flows like plastic
Basalt is ________________________
HINTS (What comes up from the center of the earth to form the ocean floor?)
(What type of water is in the ocean?)
sedimentary rock that makes up most of the continental crust
sedimentary rock that makes up most of the oceanic crust
igneous rock that makes up most of the contintal crust
igneous rock that makes up most of the oceanic crust
Sea floor spreading is
the process that transfers heat energy by direct contact
the process by which molten material rises from the mantle and creates new oceanic crust
the process by which the Earth's magnestic field is created
the process that transfers heat through convection
Subduction zone is
the layer of hot, solid material between the crust and core
the area where a denser plate is uplifted along a divergent boundry
the area where a denser plate descends (sinks) into the Earth along a convergent boundry
the place where a transform boundry is always found
Which of the following plate interactions is most likely to create a mountain range?
A transform boundry between oceanic plates
A transform boundry between continental plates
A convergent boundry between continental plates
A subduction zone between a continental plate and an oceanic plate
When 2 plates that differ in __________ collide, volcanoes often form nearby.
speed
density
thickness
temperature
The process that molten material rises from the earth and creates new oceanic crust is
seismic waves
sea floor spreading
crustal plate movement
heat transfer
The process that heat transfers energy through direct contact is
convection
radiation
conduction
plate boundry where 2 plates collide is a
convergent boundry
transform boundry
rift valley
divergent boundry
Subduction zone is where a denser plate sinks into the earth's mantle at a convergent boundry
true
false
The movement of fluid due to differences in temperature, density and force of gravity is what type of current
conduction
radiation
convection
subduction
The type of rock formed by hardened magma is
sedimentary rock
igneous rock
metaporphic rock
subducted rock
What theory states that Earth's continents are all in constant, slow motion is
conduction
convergence
continental drift
plate tectonics
A plate boundary where 2 plates seperate or move away from eachother is a fault
true
false
A plate boundary where 2 plates slide past eachother is a divergent boundary
true
false
A break or crack in the Earths's crust where slabs of rock have moved or been displaced is a fault
true
false
