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plate tectonics

plate tectonics vocabulary

QuestionAnswer
the layer on which lithospheric plates move or "float" ASTHENOSPHERE
stress force that causes plates to separate TENSION
boundary where deep ocean trenches are found CONVERGENT
boundary where the mid-ocean ridge forms DIVERGENT
famous strike-slip fault found in North America SAN ANDREAS
mountain range formed by the converging Indian and Eurasian plates HIMALAYAS
where oceanic crust gets recycled into the mantle SUBDUCTION ZONE
the two landforms resulting from the collision continental crust & oceanic crust DEEP OCEAN TRENCH & VOLCANIC MOUNTAIN RANGE
process that continually adds crust to the ocean floor SEA-FLOOR SPREADING
approximately 250 million years ago, all of the continental crust was connected in this landmass PANGAEA
type of boundary where strike-slip faults form TRANSFORM
stress force associated with convergent boundaries COMPRESSION
the layer of Earth that makes up the tectonic plates LITHOSPHERE
longest mountain range on Earth MID-OCEAN RIDGE
landform found at a continental divergent boundary RIFT VALLEY
as depth increases, temperature, density & pressure all __ INCREASE
the cause of plate movement CONVECTION CURRENTS IN THE ASTHENOSPHERE
scientists learn about Earth's interior by studying ___ SEISMIC WAVES
layer of Earth that is solid metal INNER CORE
heat transfer within a fluid CONVECTION
process that returns oceanic crust to the mantle at a deep ocean trench SUBDUCTION
landform associated with a convergent boundary involving oceanic crust DEEP OCEAN TRENCH
landform associated with a continental-continental convergent boundary NON-VOLCANIC MOUNTAIN RANGE
Pangaea contained all of Earth's ___ crust CONTINENTAL
property of a plate's crust that determines how it interacts at plate boundaries DENSITY
___ form at convergent boundaries because oceanic crust melts in the process of subduction VOLCANOES
location of the majority of Earth's active volcanoes RING OF FIRE
the process of mountain building, volcanic activity and earthquakes all occur primarily at ___ ___ PLATE BOUNDARIES
stress force associated with transform boundaries SHEARING
a break in Earth's crust along which rocks slide FAULT
process associated with a divergent boundary with oceanic crust SEA-FLOOR SPREADING
process associated with a continental-continental convergent boundary MOUNTAIN BUILDING
geologic event associate with transform boundaries EARTHQUAKES
geologic event associated with oceanic convergent boundaries STRONG EARTHQUAKES
ocean that gradually is getting smaller due to its many convergent boundaries PACIFIC OCEAN
landform associated with oceanic divergent boundary MID-OCEAN RIDGE
theory that states Earth's crust is broken into plates that are slowly but constantly moving THEORY OF PLATE TECTONICS
ocean that is gradually getting larger because it is not surrounded by convergent boundaries ATLANTIC OCEAN
scientists discovered the boundaries of the plates by mapping ___ & ___ EARTHQUAKES & VOLCANOES
the source of new oceanic crust in the process of sea-floor spreading MOLTEN MATERIAL IN THE MANTLE
VOLCANIC MOUNTAINS FORM AT __ BOUNDARIES DIVERGENT & CONVERGENT (continental-oceanic)
THE MIDOCEAN RIDGE FORMS AT __ BOUNDARIES DIVERGENT
DEEP OCEAN TRENCHES FORM AT __ BOUNDARIES CONVERGENT (continental-oceanic & oceanic-oceanic)
ISLAND ARCS FORM AT __ BOUNDARIES CONVERGENT (oceanic-oceanic)
NON-VOLCANIC MOUNTAINS FORM AT __ BOUNDARIES CONVERGENT (continental-continental)
VOLCANIC ACTIVITY OCCURS AT __ BOUNDARIES DIVERGENT & CONVERGENT (continental-oceanic & oceanic-oceanic)
SEAFLOOR SPREADING OCCURS AT __ BOUNDARIES DIVERGENT
EARTHQUAKES OCCUR AT __ BOUNDARIES ALL (remember the earthquake mapping video?)
TENSION IS THE STRESS FORCE AT __ BOUNDARIES DIVERGENT
SHEARINGIS THE STRESS FORCE AT __ BOUNDARIES TRANSFORM
COMPRESSION IS THE STRESS FORCE AT __ BOUNDARIES CONVERGENT
WHAT IS THE CAUSE OF PLATE MOVEMENT? CONVECTION CURRENTS IN THE ASTHENOSPHERE
WHAT PROPERTY DETERMINES HOW PLATES INTERACT? DENSITY (for example, oceanic crust sinks beneath continental crust at a convergent boundary)
WHICH CRUST IS THICKER? CONTINENTAL
WHICH CRUST IS MORE DENSE? OCEANIC
Created by: cgottlieb
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