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SCIENCE 10 QUARTER 1 REVIEW QUIZ
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Which kind of plate boundary occurs at A?
oceanic-oceanic divergent boundary
When two different types of plate collide, the oceanic plate usually subducts beneath the continental plate. Explain.
Oceanic plate is denser than continental plate.
What element is abundant in the earth’s crust?
Oxygen
Who proposed continental drift theory?
Alfred Wegener
San Andreas fault found in North American Plate is what type of plate boundary?
Transform fault boundary
Which crust is most likely to subduct?
The older, the denser plate will subduct beneath the less dense plate.
This geologic features can be observed in a place where two oceanic crusts diverge.
RIFT VALLEY
What did scientists conclude when they discovered that stripes of ocean floor leading away from the crest showed polarities that alternate between normal and reversed?
That the earth‘s magnetic field must have flip-flopped many times since its formation.
Why does oceanic plates go beneath continental plate?
Oceanic plate is denser than continental plate.
Compare the densities of the Earth’s crust, mantle, and core?
The mantle is less dense than the core but denser than the crust.
Where do most new oceanic crust form?
at mid-ocean ridges
Name the type of movements on the Earth's crust.
DIVERGENT, CONVERGENT, TRANSFORM
What is the role of the mid-ocean ridge in the movement of lithospheric plates?
force where actual seafloor spreading occurs
In a convection current, hot materials move ______________.
upward
Why is the inner core solid?
The inner core is solid because of pressure exerted by Earth’s outer layers.
Lithosphere is made up of ___________.
Crust and Upper mantle
What feature is created along the plate boundary when a plate subducts underneath another plate?
trench
What is the driving force that facilitates the movement of the lithospheric plates?
Convection current in the mantle
In which layer of the earth does convection current take place?
Mantle
What evidence supports Wegener's Theory? Give at least 2.
sides of continents fit together, same fossils found on different parts, mineral and rock formation
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