Moonquakes Occur MOST Often When the Moon Is near Perigee

question 110

Multiple Choice

Moonquakes occur MOST often when the Moon is near perigee (at its closest approach to Earth) . The reason is

• A) increased tidal distortion of the Moon by Earth.
• B) higher probability of impacts on the Moon of meteoroids that have been accelerated by Earth at these lunar phases.
• C) increased speed of rotation of the Moon at these times and consequent reduction of the gravitational force on the surface.
• D) increased sunlight on the Moon's surface at these times.

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