Continental Drift 2
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Printed: October 7, 2015
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C HAPTER
Chapter 1. Continental Drift 2
1
Continental Drift 2
Lesson 6.2: Multiple Choice
Circle the letter of the correct choice.
1. To develop the theory of plate tectonics, scientists first had to accept the idea that
a.
b.
c.
d.
Earth’s core consists of molten metals.
some organisms can cross the oceans.
Earth’s continents are able to move.
all of the above
2. The idea of continental drift was first proposed in the early
a.
b.
c.
d.
1700s.
1800s.
1900s.
2000s.
3. Evidence for continental drift comes from ancient
a.
b.
c.
d.
magnetic compasses.
maps of Pangaea.
coal seams.
all of the above
4. Wegener observed that the Appalachian Mountains in eastern North America matched mountain ranges in
a.
b.
c.
d.
western North America.
South America.
Greenland.
Africa.
5. What was Alfred Wegener’s role in the development of the theory of plate tectonics?
a.
b.
c.
d.
He proposed the hypothesis of continental drift.
He provided evidence that continents have moved.
He identified magnetic evidence for plate tectonics.
two of the above
6. In Pangaea, the present continent of South America was attached to present-day
a.
b.
c.
d.
Australia.
Eurasia.
Africa.
India.
Lesson 6.2: Matching
Match each definition with the correct term.
Definitions
_____ 1. region of magnetic force surrounding a magnet
_____ 2. evidence for continental drift identified after Wegener’s death
1
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_____ 3. hypothesis that continents move over Earth’s surface
_____ 4. evidence for continental drift identified by Wegener
_____ 5. former supercontinent that consisted of all the present continents
_____ 6. theory that explains how continents can drift
Terms
a. plate tectonics
b. fossils
c. magnetite crystals
d. continental drift
e. Pangaea
f. magnetic field
Lesson 6.2: Fill in the Blank
Name___________________ Class______________ Date________
Fill in the blank with the appropriate term.
1.
2.
3.
4.
5.
6.
2
The meteorologist who first proposed the idea of continental drift was __________.
Continental drift is supported by glacial evidence that has been found near the __________.
Wegener found coral reef fossils in areas that are too __________ today for corals to live.
As lava cools, tiny iron-rich crystals line up with Earth’s __________.
The theory of plate tectonics explains how Earth’s continents are able to __________.
Evidence for continental drift includes rocks that were once side-by-side and are now located on separate
__________.