Podcast
Questions and Answers
What is the Greek meaning of the word 'pyroclastic'?
What is the Greek meaning of the word 'pyroclastic'?
- Toxic gases
- Broken pieces of fire (correct)
- Molten lava
- Volcanic cloud
What is the characteristic of lapilli when they cool quickly in the air?
What is the characteristic of lapilli when they cool quickly in the air?
- Filament-shaped due to wind
- Diamond-shaped
- Spherical shape
- Glassy and tear-shaped (correct)
What is another term for a 'nuee ardente'?
What is another term for a 'nuee ardente'?
- Tephra cloud
- Pumice flow
- Block-and-ash flow (correct)
- Lava dome collapse
What is the main reason for the red glow in a nuee ardente (pyroclastic flow)?
What is the main reason for the red glow in a nuee ardente (pyroclastic flow)?
What are the major components of a pyroclastic flow?
What are the major components of a pyroclastic flow?
What is the main characteristic of ignimbrites?
What is the main characteristic of ignimbrites?
How are ignimbrites described etymologically?
How are ignimbrites described etymologically?
What distinguishes a pyroclastic surge from other volcanic flows?
What distinguishes a pyroclastic surge from other volcanic flows?
Where does a ground surge pyroclastic surge occur?
Where does a ground surge pyroclastic surge occur?
Why are pyroclastic surges considered extremely dangerous?
Why are pyroclastic surges considered extremely dangerous?
What is the main difference between a pyroclastic flow and a lava flow?
What is the main difference between a pyroclastic flow and a lava flow?
What type of eruption typically generates pyroclastic flows?
What type of eruption typically generates pyroclastic flows?
Which scenario describes one way that pyroclastic flows form?
Which scenario describes one way that pyroclastic flows form?
What is a lava dome?
What is a lava dome?
In which scenario would a pyroclastic flow be generated due to a collapse?
In which scenario would a pyroclastic flow be generated due to a collapse?
