Geography A-Level
Asthenosphere
What Asthenosphere means in Geography A-Level, as defined for Pearson Edexcel.
Definition of Asthenosphere
The semi-molten, plastic layer of the upper mantle upon which the rigid lithospheric plates float and move.
Topics that use Asthenosphere
- 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 Asthenosphere 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.
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