
Dynamic Earth
Flashcard
•
Science
•
7th Grade
•
Practice Problem
•
Hard
Ashley Esparza
FREE Resource
Student preview

33 questions
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1.
FLASHCARD QUESTION
Front
Pangaea
Back
name given to a supercontinent that began to break apart approximately 200 million years ago.
2.
FLASHCARD QUESTION
Front
Continental drift
Back
Wegener’s hypothesis that all continents were once connected in a single large landmass that broke apart about 200 million years ago and drifted slowly to their current positions.
3.
FLASHCARD QUESTION
Front
mid-ocean ridge
Back
long, narrow mountain range on the ocean floor; formed by magma at divergent plate boundaries.
4.
FLASHCARD QUESTION
Front
ocean trench
Back
a deep, underwater trough created by one plate subducting under another plate at a convergent plate boundary.
5.
FLASHCARD QUESTION
Front
seafloor spreading
Back
the process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
6.
FLASHCARD QUESTION
Front
magma
Back
molten rock stored below Earth's surface.
7.
FLASHCARD QUESTION
Front
lava
Back
magma that erupts onto Earth's surface.
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