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Pangaea and Plates

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

The outermost, rigid layer of the Earth is called the
a.
mesosphere.
c.
asthenosphere.
b.
lithosphere.
d.
outer core.
 

 2. 

Which layer of the Earth is made up of tectonic plates?
a.
core
c.
asthenosphere
b.
mesosphere
d.
lithosphere
 

 3. 

Earth's oceanic crust is ____ than the continental crust.
a.
thinner but denser
c.
thicker but less dense
b.
thicker and denser
d.
thinner and less dense
 

 4. 

What were mesosaurus and glossopteris?
a.
the names of continents in Pangaea
c.
fossils used by Wegener as evidence of Pangaea
b.
the oceans around Pangaea
 

 5. 

Scientists have used drilling equipment to drill a hole down into the Earth’s
a.
mantle
c.
crust
b.
aesthenosphere
d.
moho
 

 6. 

If we compare the temperature and pressure of the Earth's mantle to the core, what differences can we expect as we move downward into the Earth?
a.
Both the temperature and pressure increase.
b.
Both the temperature and pressure decrease.
c.
The temperature decreases and the pressure increases.
d.
The temperature increases and the pressure decreases.
 

 7. 

The ancient continent that contained all the landmasses is called
a.
Pangaea.
c.
Laurasia.
b.
Gondwana.
 

 8. 

In the 1940’s and 1950’s, scientists began using __________ to map the ocean floor.
a.
laser beams
c.
sound waves
b.
radar
 

 9. 

What actually causes the continents to move?
a.
the coriolis effect
c.
the Earth’s rotation
b.
seafloor spreading
 

 10. 

Wegener believed that the continents originally broke apart about ____ years ago.
a.
200 million
c.
400 million
b.
300 million
 

 11. 

The world’s longest chain of mountains is the
a.
Andes Mountains
c.
Rocky Mountains
b.
mid-ocean ridge
 

 12. 

What evidence did Alfred Wegener use to support his idea of Pangaea?
a.
he used sonar pictures of the  ocean floor
c.
he used deep diving submersibles
b.
he used plant and animal fossils
d.
He measured the movement
 



 
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