Question

which describes the solid flying debris from a volcano?
a. pyroclastic flow
b. lava
c. magma
d. tephra

Explanation:

• Pyroclastic flow: A fast - moving current of hot gas and volcanic matter (not just solid debris).
• Lava: Molten rock that has erupted onto the Earth's surface (liquid state, not solid flying debris).
• Magma: Molten rock beneath the Earth's surface (liquid state, not solid flying debris).
• Tephra: Fragmental material (solid) produced by a volcanic eruption and projected into the air.

Answer:

D. Tephra