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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 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.
 

 11. 

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

 12. 

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.
 

 13. 

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

 14. 

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.
 

 15. 

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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