Volcanic bomb
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Volcanic bombs are globules of melted rock (tephra) larger than 2.5 inches (64 mm) in diameter that are thrown into the air during a volcanic eruption, cooling into solid fragments before they reach the ground.
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Volcanic bombs are globules of melted rock (tephra) larger than 2.5 inches (64 mm) in diameter that are thrown into the air during a volcanic eruption, cooling into solid fragments before they reach the ground.