Final answer:
The process used by archaeologists to form weapons by striking two stones against each other is called percussion.
Step-by-step explanation:
The process used by archaeologists to form weapons by striking two stones against each other is called percussion. This technique involves hitting a stone, known as the core, with another stone, called the hammerstone, to produce sharp flakes or blades. The flakes or blades can then be used as cutting tools or projectiles. An example of percussion technique can be seen in the creation of stone arrowheads by Native Americans in prehistoric times.
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