Author Question: Earth's precession A) means that Polaris is always the North Star. B) is responsible for changes ... (Read 45 times)

JMatthes · **on:** Jul 13, 2018

Earth's precession
A) means that Polaris is always the North Star.
B) is responsible for changes in Earth's eccentricity.
C) can slowly change the climate difference between summer and winter in the Northern Hemisphere.
D) has the same time period as changes in obliquity.
E) all of the above

Question 2

The tilt of Earth's axis to the plane of its orbit around the Sun
A) stays the same.
B) varies about 2.5 degrees.
C) is currently about 3 degrees.
D) goes through one cycle of change about every 1.1 million years.
E) has a major effect on Earth's eccentricity.