(Print) Use this randomly generated list as your call list when playing the game. Place some kind of mark (like an X, a checkmark, a dot, tally mark, etc) on each cell as you announce it, to keep track. You can also cut out each item, place them in a bag and pull words from the bag.
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O-Crust
B-One plate sinks beneath another
N-4.5 Billion years ago
B-Continental Shelf
I-Fault
B-Rift
N-Shear Boundary
G-Mid-Ocean Ridges
I-Subduction
O-Outer Core
B-Continental Drift
O-Basalt
G-Magnetic anomalies, sea-floor spreading, and mid-ocean ridges