Seafloor spreading

Flashcard
•
Science, Geography
•
6th - 9th Grade
•
Easy
Randi Kapp
Used 1+ times
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14 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Where are the youngest rocks on the ocean floor located?
Back
at mid-ocean ridges
2.
FLASHCARD QUESTION
Front
The crust and upper mantle make up Earth's ____.
Back
lithosphere
3.
FLASHCARD QUESTION
Front
Scientists have observed that the continents move apart or come together at speeds of a few centimeters per ____.
Back
year
4.
FLASHCARD QUESTION
Front
Seafloor spreading occurs because ____.
Back
molten material beneath Earth's crust rises to the surface
5.
FLASHCARD QUESTION
Front
A vast, underwater mountain chain is called a(n) _________.
Back
ocean ridge
6.
FLASHCARD QUESTION
Front
What particular event is shown on the picture?
Back
subduction zone
7.
FLASHCARD QUESTION
Front
What technology did scientists use in the mid-1900s to map the mid-ocean ridge?
Back
sonar
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