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- Es 4.4 Divergent Plate Boundaries And Seafloor Spreading

ES-4.4-Divergent-Plate-Boundaries-and-Seafloor-Spreading
Presentation
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Jacob W
Used 2+ times
FREE Resource
8 Slides • 8 Questions
1
Multiple Choice
Bellringer:
Which crust is older, continental or oceanic?
2
3
Multiple Choice
Why are divergent plate boundaries and seafloor spreading significant for understanding Earth's geological features?
They explain the formation of mountains on continents
They are responsible for the creation of new oceanic crust and the longest topographic features on Earth
They cause the destruction of oceanic crust
They only occur on land
4
5
6
Multiple Choice
Which of the following statements about the global oceanic ridge system is correct?
It represents 20% of Earth's surface and exceeds 70,000 kilometers in length.
It is only found in the Atlantic Ocean and is less than 10,000 kilometers long.
It is the deepest part of the ocean and is not connected to any ocean basins.
It is formed only by volcanic eruptions and does not rise above adjacent ocean basins.
7
8
Open Ended
Explain how tensional forces contribute to the formation of rift valleys along oceanic ridges.
9
10
Multiple Select
Which of the following are thermal effects on oceanic lithosphere as it moves away from the ridge axis?
New lithosphere forms and is less dense.
Lithosphere cools, contracts, and increases in density.
Temperature stabilizes after about 80 million years.
Lithosphere becomes thinner as it moves away from the ridge.
11
12
Fill in the Blanks
The process that splits landmasses into smaller segments separated by ocean basins is called continental
Type answer...
13
14
Multiple Choice
What evidence supports the idea that the East African Rift is an example of continental rifting in action?
Presence of large volcanic mountains like Mount Kilimanjaro and Mount Kenya
Formation of deep ocean trenches
Absence of any volcanic activity
Stable and unchanging landforms
15
16
Multiple Choice
What is the main process that occurs at divergent plate boundaries?
Seafloor spreading
Subduction
Mountain formation
Earthquake generation
Bellringer:
Which crust is older, continental or oceanic?
Show answer
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MULTIPLE CHOICE
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