Question

What are lava fragments that are blasted out during volcanic eruptions?


tephra


ballistics


ash

Question at position 7
7

Multiple Choice
1 point



Question at position 7

What is a pyroclastic flow?


pieces of solid rock or partly molten lava that tumble down.


searing volcanic gas, ash and course pieces of lava that sweep down the flanks of a volcano.


the finest particles of ash that billow upward into the sky.

Question at position 8
8

Multiple Choice
1 point



Question at position 8

What is a lahar?


a flood of mud, ash and rock that resemble watery concrete.


a sluggish plug of partly solidified lava


fluid lava that can cover ma

Answer 1

1) Tephra

2) Searing volcanic gas, ash and coarse pieces of lava that sweep down the flanks of a volcano. (pyroclastic flow)

3) A flood of mud, ash and rock that resemble watery concrete. (lahar)