The Mohorovicic Discontinuity or Moho Was Discovered Based on

question 15

Multiple Choice

The Mohorovicic discontinuity or Moho was discovered based on

• A) chemical differences between felsic and mafic rocks.
• B) the S-wave shadow zone.
• C) a sharp change in seismic velocities.
• D) mineralogical data from drill holes.

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Definitions:

Oxide Ion

An ion consisting of oxygen and carrying a negative two charge, represented as O^2-.

Helium Ion

A positively charged helium atom, often resulting from the removal of one electron from the neutral atom.

Bromide Ion

The bromide ion is a negatively charged ion (Br-) that is formed when a bromine atom gains an electron.

Ionic Compound

A chemical compound composed of ions held together by electrostatic forces termed ionic bonding, generally formed between metal and non-metal ions.