Name: 
 

Plate Tectonics



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

 1. 

The youngest rocks on the ocean floor are located ____.
a.
near continents
c.
far from mid-ocean ridges
b.
at mid-ocean ridges
d.
near Asia
 

 2. 

The crust and upper mantle make up Earth's ____.
a.
lithosphere
c.
core
b.
asthenosphere
d.
continents
 

 3. 

Plates of the lithosphere float on the ____.
a.
crust
c.
core
b.
asthenosphere
d.
atmosphere
 

 4. 

The result of plate movement can be seen at ____.
a.
abyssal plains
c.
plate centers
b.
ocean margins
d.
plate boundaries
 

 5. 

The ____ are mountains formed by the collision of the Indo-Australian Plate and the Eurasian Plate.
a.
Alps
c.
Himalaya
b.
Rockies
d.
Appalachians
 

 6. 

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

 7. 

Plates move apart at ____ boundaries.
a.
convergent
c.
divergent
b.
stable
d.
transform
 

 8. 

The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's ____ has reversed itself several times in the past.
a.
magnetic field
c.
asthenosphere
b.
core
d.
gravity
 

 9. 

Plates slide past one another at ____.
a.
subduction zones
c.
convection currents
b.
transform boundaries
d.
divergent boundaries
 

 10. 

The boundary between two plates moving together is called a ____.
a.
divergent boundary
c.
transform boundary
b.
convergent boundary
d.
lithosphere
 

 11. 

Seafloor spreading occurs because ____.
a.
new material is being added to the asthenosphere
b.
earthquakes break apart the ocean floor
c.
sediments accumulate at the area of spreading
d.
molten material beneath Earth's crust rises to the surface
 

 12. 

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

 13. 

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

 14. 

____ currents inside Earth might drive plate motion.
a.
Vertical
c.
Horizontal
b.
Convection
d.
none of the above
 

 15. 

In order to complete a convection current, the rising material must eventually ____ Earth.
a.
stop inside
c.
sink back into
b.
cool
d.
warm
 

 16. 

The Great Rift Valley in Africa is a ____.
a.
mid-ocean ridge
c.
convergent boundary
b.
divergent boundary
d.
transform boundary
 

 17. 

The Andes mountain range of South America was formed at a ____.
a.
convergent boundary
c.
hot spot
b.
divergent boundary
d.
transform boundary
 

 18. 

Active volcanoes are most likely to form at ____.
a.
transform boundaries
b.
divergent boundaries
c.
the center of continents
d.
convergent oceanic–continental boundaries
 

 19. 

____ are formed when two continental plates collide.
a.
Volcanoes
c.
Mountain ranges
b.
Strike-slip faults
d.
Rift valleys
 

 20. 

The ____ is (are) an example of a transform boundary.
a.
Appalachian Mountains
c.
Mid-Atlantic Ridge
b.
Himalaya
d.
San Andreas Fault
 

 21. 

A ____ forms where two oceanic plates collide.
a.
hot spot
c.
transform boundary
b.
subduction zone
d.
rift valley
 
 
nar001-1.jpg
Figure 10-1
 

 22. 

According to Figure 10-1, what type of plate boundary occurs between the North American Plate and the Eurasian Plate?
a.
transform boundary
b.
divergent boundary
c.
convergent oceanic-continental plate boundary
d.
convergent oceanic-oceanic plate boundary
 

 23. 

According to Figure 10-1, what type of plate boundary occurs between the Nazca Plate and the South American Plate?
a.
convergent oceanic-continental plate boundary
b.
convergent oceanic-oceanic plate boundary
c.
convergent continental-continental plate boundary
d.
transform boundary
 

Matching
 
 
Match each term with the correct statement below.
a.
seafloor
c.
continents
b.
Pangaea
d.
lithosphere
 

 24. 

Alfred Wegener believed that the ______ were once joined.
 

 25. 

The name ______ comes from two words that mean "all land."
 

 26. 

The Glomar Challenger gathered information about rocks on the _____.
 

 27. 

The crust and upper mantle make up the _____.
 
 
Match each term with the correct statement below.
a.
mid-ocean ridge
d.
subduction zone
b.
convergent boundary
e.
continental drift
c.
asthenosphere
 

 28. 

Earth's thick, plasticlike layer is the _____.
 

 29. 

Plates move together at a(n) _____.
 

 30. 

One plate is forced under another in a(n) _____.
 

 31. 

A(n) _____ is an underwater mountain chain.
 

 32. 

The main points of evidence for _____ are fossils, rocks, and climate.
 



 
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