pyroclastic flow
They can travel at highway speeds or faster. This topic is part of Volcanoes within Science & Nature. This page currently draws on 5 supporting questions, with answers and bonus facts available below.
pyroclastic flow trivia questions
Pyroclastic flows are dangerous partly because they are extremely hot and what?
Answer: Fast
Bonus fact: They can travel at highway speeds or faster.
Which Roman cities were overwhelmed by pyroclastic surges and deposits from Vesuvius in 79 CE?
Answer: Pompeii and Herculaneum
Bonus fact: Vesuvius buried communities around the Bay of Naples.
A pyroclastic flow is a fast-moving mixture of hot gas and what?
Answer: Volcanic debris
Bonus fact: It races down volcanic slopes.
What volcanic hazard is a hot, fast-moving, dense mixture of ash, rock fragments, and gas?
Answer: Pyroclastic flow
Bonus fact: Pyroclastic flows commonly exceed 800 °C and can move at tens of meters per second.
What volcanic material preserved much of Herculaneum?
Answer: Pyroclastic flows
Bonus fact: Hot surges carbonized wood and buried structures rapidly.