DCA #4 8.9ABC Review Question Preview (ID: 49724)
Unit 6.
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What is occurring when 2 plates collide at bottom of ocean and one goes beneath the other?
a) ocean ridge forms
b) transform boundary is occurring
c) subduction occurs because oceanic crust is less dense then continental crust
d) divergent boundary occurs creating mountain
Where would you find the youngest layers of the ocean floor after tectonic activity?
a) at the bottom
b) at the top
c) in the middle
d) on the side
2 of the same plant fossils were discovered in Texas and Europe, this is evidence of
a) volcanic eruptions
b) plate tectonic movement
c) erosion
d) weathering
What would you find at a divergent boundary?
a) mountain
b) volcano
c) mid-ocean ridge
d) fault line
What land forms can you find at a convergent boundary?
a) mountain
b) mid-ocean ridge
c) rift valley
d) fault line
2 particular LAND animal fossils are found on both sides of the Atlantic Ocean, which one explains how this occurs?
a) The animals swam across
b) The animals walked across a large land bridge over the ocean
c) The Atlantic ocean did not exist at the time
d) The animals walked across a large ice bridge closer to equator
Scientists believe that convection currents occur _____ that allow the plates to move.
a) Lithosphere
b) Asthenosphere
c) Inner core
d) Outer core
What 2 continents did Alfred Wegener think fit together like 2 puzzle peices?
a) South America and Africa
b) Asia and North America
c) Europe and Africa
d) Africa and Asia
How would you describe a convergent boundary?
a) moving apart
b) colliding
c) side by side
d) only found in the ocean
When 2 plates demonstrate TRANSFORMATION(side by side) what kind of force is responsible for the plates to move?
a) Balanced
b) Gravity
c) Unbalanced
d) Friction
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