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Plate Tectonics Vocab – Magic Squares
Theory
Continental Volcanic
Arc
Lithospheric Plate
Continental Drift
Pangaea
Subduction Zone
Seafloor Spreading
Oceanic Ridge
Trench
Volcanic Island Arc
Hypothesis
Convergent Boundary
Rift Valley
Divergent Boundary
Plate Tectonics
Transform Fault
Boundary
Directions: Above is a group of terms related to Plate Tectonics. Your task is to match the definitions
below with the correct term. Place the number of the definition in the box with the term. Check
your answers by adding the numbers to see if the sums of each column and each row add up to the
same “Magic Number”.
1. A boundary in which two plates slide past each other, neither creating nor destroying crust.
2. Supercontinent that began breaking up 200 million years ago.
3. Feature on seafloor produced by subduction.
4. Idea that all continents had once been joined together, and later drifted apart.
5. Mountains formed by volcanic activity due to subduction of an oceanic plate under a continental
plate.
6. A tentative explanation that is tested to determine if it is valid.
7. New oceanic lithosphere is formed at ocean ridges.
8. Region where lithospheric plates move apart.
9. A rigid section of the lithosphere that moves over the asthenosphere.
10. Chain of volcanic mountains formed where a slab of oceanic crust is subducted under another slab
of oceanic crust.
11. A destructive plate boundary where one plate is pushed down beneath another plate.
12. A theory that explains how earthquakes, volcanoes and mountains are produced.
13. Deep fault structures, found on land or the seafloor, that are formed at divergent boundaries.
14. Continuous elevated zones, found on the seafloor, that are formed at divergent boundaries.
15. Region where lithospheric plates collide.
16. A well-tested and accepted viewpoint that explains certain facts.
What is the Magic Number? ____________
Crust Comparison
Type
Thickness
Composition
Density
Oceanic
Continental
Plate Boundary Comparison
Boundary
Name
Divergent
Convergent
Oceanic to Oceanic
Convergent
Oceanic to
Continental
Convergent
Continental to
Continental
Transform
Movement
Sketch
Landforms /
Events
Locations