Geography A-Level
Pyroclastic Flow
What Pyroclastic Flow means in Geography A-Level, as defined for Pearson Edexcel.
Definition of Pyroclastic Flow
A high-velocity, superheated current of gas and tephra reaching speeds of over 100km/h, typical of explosive eruptions.
Topics that use Pyroclastic Flow
- Tectonic Processes and Hazards (Pearson Edexcel A-Level)
Related terms
- Areal Extent
- Base Isolation
- Benioff Zone
- Governance
- Governance and Institutional Capacity
- Gravitational Force Mechanisms
- Hazard Profiles and Magnitude
- Jökulhlaup
Using Pyroclastic Flow in the exam
Definition questions usually carry one or two marks, and examiners look for the precise wording. Write the definition from memory, check it against the version above, and then use the term in a longer answer on the same topic so it sticks.
Practise Geography questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Geography A-Level terms7 days Premium · Then free forever · No card, no charge