Biology Forums - Study Force

Precession of the rotation axis of Earth is caused by
 
  a. the force of gravity from the Sun and Moon on Earth's equatorial bulge.
  b. the force of gravity from the Sun and Jupiter on the Earth-Moon system.
  c. the magnetic field of Earth.
  d. the formation and subsequent melting of glaciers during the ice-ages.
  e. the impact of asteroids.

Question 2

In contrast to Ursa Major, the Big Dipper is not a(n) ___ but is instead a(n) ______
 
  a. star; constellation.
  b. asterism; constellation.
  c. a constellation; asterism.
  d. Wrong Both are asterisms.
  e. Wrong Both are official constellations.

Question 3

A(n) ____ is 1/60th of a minute of arc.
 
  a. precession
  b. second of arc
  c. degree
  d. nadir
  e. angular diameter

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