Focus On Earth Science: California Grade 6

Lesson 1: Continental Drift

Standards Check

1.
Wegener hypothesized that about 200 million years ago the supercontinent _______ began to break apart. 1.a
A)Spitzbergen
B)Pangea
C)Greenland
D)Cocos
2.
How does evidence of ancient glaciers in Africa, India, and Australia support Wegener's continental drift hypothesis? 1.a
A)The formation of these glaciers was due to seafloor spreading.
B)Glaciers could have formed only if these continents were part of the same supercontinent.
C)These continents must have been in different locations were it was much colder.
D)The same mountain ranges must have exited on these continents for glaciers to form on all of them.
3.
Which mountain range in North America would have been connected to mountains now in Greenland, Great Britain, and Scandinavia? 1.a
A)Rocky
B)Cascade
C)Appalachian
D)Sierra - Nevada
4.
Why was Wegener's continental drift hypothesis rejected when he first proposed it? 1.a
A)He had made mistakes in dating his rocks and fossils.
B)His fossil evidence was incomplete.
C)Wegener's evidence was better explained by the seafloor spreading hypothesis.
D)No forces were known at that time that could cause continents to move.
Grade 6
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