Selected MCQ

Current Question
Metamorphic foliation typically develops due to:
  • A. Rapid cooling of lava
  • B. Directed pressure causing mineral alignment
  • C. Cementation of sediments
  • D. Weathering in arid climates
Correct Answer: B
Explanation:
Differential stress aligns platy or elongate minerals into planar fabrics.
Related Question 1
Which rock is metamorphic?
  • A. Granite
  • B. Basalt
  • C. Marble
  • D. Sandstone
Correct Answer: C
Explanation:
Marble forms from limestone under heat and pressure.
Related Question 2
El Niño conditions are typically associated with:
  • A. Stronger-than-normal upwelling off western South America
  • B. Weakened trade winds and warmer eastern Pacific surface waters
  • C. Permanent expansion of sea ice
  • D. A stronger Walker circulation
Correct Answer: B
Explanation:
El Niño weakens normal equatorial Pacific circulation and suppresses eastern Pacific upwelling.