Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← GeographyAlong plate boundaries, which consequence results when lithospheric pressure decreases?
A)Increased magma production and volcanism✓
B)Lower silica content in extrusions
C)Reduced occurrence of deep earthquakes
D)Decreased plate subduction velocity
💡 Explanation
Decreased lithospheric pressure causes decompression melting which leads to magma generation and volcanism at plate boundaries, because the reduced pressure lowers the melting point of mantle rocks; therefore, magma production increases, rather than remaining static, given constant heat input.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Geography →- Which mechanism facilitates desert ventifact formation where vegetation is sparse?
- Which consequence results when highly viscous lava exceeds its yield strength?
- Which outcome primarily results from water being dragged down by a subducting oceanic plate?
- Which outcome develops when increased CO2 promotes stalactite growth?
- Which consequence results when polar winds experience deflection?
- Which hydrologic consequence develops where rapid meander migration occurs?
