Which of the following is not a TYPE of plate boundary?
convergent
transform
divergent
subduction
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Which of the following is not a TYPE of plate boundary?
convergent
transform
divergent
subduction
Where is old crust melted back into magma?
at the mid-ocean ridge
along plate boundaries
at deep-sea trenches
volcano
Where does sea floor spreading happen?
at the rift valley along the mid-ocean ridges
at deep sea trenches
at the Ring of Fire
at the Pacific Ocean
What material forms new ocean floor?
sediment
magma
plates
rocks
What kind of plate boundary results to the formation of most volcanoes?
convergent boundary
divergent boundary
transform or shear boundary
What kind of plate boundary results to the formation of an Island arc?
divergent boundary
transform or shear boundary
convergent boundary
What kind of plate boundary results to the formation of a trench like the Marianas trench?
convergent boundary
divergent boundary
transform or shear boundary
What kind of plate boundary results to the formation of a mountain range like the Himalayas and the Appalachian mountains?
divergent boundary
transform or shear boundary
convergent boundary
What kind of plate boundary results to the formation of a fault line like the San Andreas fault in California?
divergent boundary
transform or shear boundary
convergent boundary
What kind of plate boundary causes sea floor spreading like the one causing the Atlantic Ocean to widen?
convergent boundary
divergent boundary
transform or shear boundary
What kind of plate boundary causes old and heavy crust ( rocks ) to sink into the mantle ( subduction)?
convergent boundary
divergent boundary
transform or shear boundary
What evidences do scientists use to support the continental drift theory?
rocks, fossils, air
rocks, fossils, climate
rocks, water, ice
rocks, fossils, human beings
What evidence did Wegener have for his theory of continental drift?
He had no evidence.
He knew that plant and animal fossils, as well as rock layers, matched on the two continents of Africa and South America.
He explained how continents moved apart.
Volcanoes form at this boundary as plates pull apart
convergent
transform
transform and convergent
divergent
This process of old crust being pulled down and remelted is called:
sea floor spreading
drifting
plate tectonics
subduction
This process makes new crust at the bottom of the ocean at a divergent boundary
Mid-Atlantic Ridge
Seafloor Spreading
Hotspot
Subduction
The youngest crust( rocks) are found ................. the mid-ocean ridge.
farthest
nearest
along
away
The theory of plate tectonics combine which two other theories?
sea floor spreading and continental drift
sea floor spreading and tidal theory
continental drift and fossil theory
continental drift and Big Bang theory
The process of one plate sliding under another plate at a convergent boundary is
transformation
convection
subduction
seafloor spreading
The partly-melted lower mantle is called:
magma
the lithosphere
the core
the asthenosphere