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Pangaea Earth Layers

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

 1. 

The crust and the very top, crunchy part of the  mantle make up Earth's ____.
a.
lithosphere
c.
core
b.
asthenosphere
d.
continents
 

 2. 

Plates of the lithosphere float on the very top, gooey part of the mantle called the ____.
a.
crust
c.
core
b.
asthenosphere
d.
atmosphere
 

 3. 

The presence of the same ____ on several continents supports the hypothesis of continental drift.
a.
fossils
c.
neither a nor b
b.
type of ancient buildings
d.
both a and b
 

 4. 

The hypothesis that continents have slowly moved to their current locations is called ____.
a.
continental drift
c.
magnetic reversal
b.
continental slope
d.
convection
 

 5. 

Because Wegener could not explain how continents moved many scientists would not believe that a single supercontinent called ____ once existed.
a.
Glomar
c.
Pangaea
b.
Glossopteris
d.
Wegener
 

 6. 

Continental drift states that continents have moved ____ to their current location.
a.
vertically
c.
quickly
b.
slowly
d.
very little
 

 7. 

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

 8. 

Which is the thickest layer of the Earth?
a.
crust
c.
mantle
b.
inner core
d.
outer core
 

 9. 

Fossils of the fern Glossopteris have been found in Africa, Australia, South America, and Antarctica. How do scientists explain this observation?
a.
The wind blew the seeds across the oceans from continent to continent.
b.
The fern developed independently on each continent.
c.
The continents were at one time joined together and then moved apart.
d.
The fern had adaptations to survive the different environments of the continents.
 

 10. 

Which theory explains the change in the position of the continents during the history of Earth?
a.
natural selection
c.
big bang
b.
plate tectonics
d.
rock cycle
 

 11. 

Which of these statements about Earth's crust is true?
a.
It is a layer of solid rock that remains the same throughout time.
b.
It includes the continents, but not the ocean floor.
c.
It is a changing, moving surface with the same thickness everywhere.
d.
It is a system of large masses called plates that slowly move together or apart.
 

 12. 

Compared to rocks in Earth's crust, rocks in the mantle are more
a.
dense.
c.
granular.
b.
mineral-rich.
d.
porous.
 

 13. 

 Use the pie section below to answer this question.
mc013-1.jpg
The pie section shows Earth's composition from the center to the surface. Section IV is most likely composed of
a.
molten iron.
c.
solid iron.
b.
granitic rock.
d.
basalt.
 

 14. 

A deep well or mine shaft goes through which layer or layers of Earth?
a.
crust only
c.
crust and mantle
b.
mantle only
d.
mantle and core
 

 15. 

Earth's core is mainly composed of
a.
iron and aluminum.
c.
iron and nickel.
b.
silicon and hydrogen.
d.
silicon and oxygen.
 

 16. 

Scientists believe the Earth's inner core to be solid. This is probably due to extremes in:
a.
depth.
c.
pressure.
b.
heat.
d.
temperature.
 

 17. 

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.
 

 18. 

Layer C in the diagram has the greatest temperature and pressure. It is MOST LIKELY Earth's
mc018-1.jpg
a.
atmosphere.
c.
mantle.
b.
crust.
d.
core.
 

 19. 

Layer A in the diagram has the lowest temperature and pressure. What part of the Earth is labeled layer A?
mc019-1.jpg
a.
the atmosphere
c.
the mantle
b.
the crust
d.
the core
 

 20. 

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

 21. 

A fossil plant that helps support the theory of continental drift is ____.
a.
Mimosa
c.
Glomar
b.
Glossopteris
 

 22. 

According to Wegener’s hypothesis of continental drift,
a.
the continents were once joined together in one giant landmass.
b.
the continents do not move.
c.
Earth is slowly cooling and shrinking.
 

 23. 

What is Pangaea?
a.
the name of a German scientist
b.
the name of the supercontinent that existed millions of years ago
c.
another name for continental drift
 

 24. 

Which type of evidence was NOT used by Alfred Wegener to support his continental drift hypothesis?
a.
evidence from landforms
b.
evidence from fossils
c.
evidence from human remains
 



 
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