Author Question: The ionosphere is a layer of ionized gas that is A) above the exosphere. B) between the ... (Read 134 times)

maegan_martin · **on:** Jul 27, 2018

The ionosphere is a layer of ionized gas that is

A) above the exosphere.
B) between the thermosphere and the exosphere.
C) within the thermosphere.
D) within the stratosphere.
E) within the troposphere.

Question 2

Which of the following is not a characteristic of the 11-year sunspot cycle?

A) The sunspot cycle is very steady, so that each 11-year cycle is nearly identical to every other 11-year cycle.
B) The likelihood of seeing solar prominences or solar flares is higher when sunspots are more common and lower when they are less common.
C) The Sun's entire magnetic field flip-flops at the end of each cycle (at solar minimum).
D) The number of sunspots on the Sun at any one time gradually rises and falls, with an average of 11 years between the times when sunspots are most numerous.