Author Question: The reason that Earth is now closest to the Sun in January, but will be closest in July in 11,000 ... (Read 61 times)

jazziefee · **on:** Jul 15, 2018

The reason that Earth is now closest to the Sun in January, but will be closest in July in 11,000 years,
is:
a. orbital eccentricity.
b. changes in axial tilt.
c. precession of the equinoxes.
d. gravitational attraction to the sun.
e. gravitational attraction to the moon.

Question 2

The ice ages are caused by:
a. the drift of the continents.
b. the eruption of supervolcanoes.
c. the sunspot cycle.
d. minor changes in Earth's rotation and orbit.
e. variations in solar output.