Other questions in this quiz

2. Why is magma created as the plume rises

  • Due to a fall in pressure (decompression melting)
  • The lithosphere melts
  • Its already there

3. What are created soon as a result of submarine volcanic eruptions

  • Island Arcs
  • Seamounts
  • Islands

4. What happens to older inactive islands

  • Get attcked by marine erosion and fall below sea level as seamounts
  • Nothing
  • They eventually fall into the sea

5. Why is heat generated at the outer core/ mantle boundary

  • Thermal currents
  • Heat from the Sun
  • Possibly due a concentration of radioactive elements
  • Heat from the core


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