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S-waves vibrate perpendicular to their direction in the vertical plane, creating:
AWhirlpools in magma
BTroughs and crests
CRising heat plumes
DCircular tunnels
Answer & Solution
Correct answer: B. Troughs and crests
1. The S-wave's motion is sideways to its travel.
2. It creates troughs and crests in the material it crosses.
3. P-waves push and pull along the direction instead.
_Source: NCERT Class 11 Geography, Ch 3 'Interior of the Earth' (kegy203)_
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