

Ch 9 Vocab Test Review
Flashcard
•
Science
•
7th - 12th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
Alfred Wegner proposed that all continents were once a supercontinent called ______________.
Back
Pangea
2.
FLASHCARD QUESTION
Front
Wegner's hypothesis of _____________ suggests continents are in constant motion on Earth's surface.
Back
continental drift
3.
FLASHCARD QUESTION
Front
Mountain ranges in the ocean are called _____________.
Back
mid-ocean ridge
4.
FLASHCARD QUESTION
Front
New volcanic crust moves from the ridge.
Back
seafloor spreading
5.
FLASHCARD QUESTION
Front
State where magnetized objects, like compass needles, point north.
Back
normal polarity
6.
FLASHCARD QUESTION
Front
Magnetic field reversal occurs during _____________.
Back
magnetic reversal
7.
FLASHCARD QUESTION
Front
State where magnetized objects reverse direction & orient south.
Back
reversed polarity
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