Passage VII

In the ionosphere (the atmosphere between 50 km and 2,000 km above Earth's surface), gaseous atoms and molecules lose electrons and become ions when struck by energetic solar radiation (X-rays and ultraviolet radiation). The figure shows the electron density, in free electrons/cm3, for a portion of the ionosphere above a 45°N latitude location. The electron density and the specific ions present in the D, E, and F layers of the ionosphere are important in the long-distance transmission of high frequency radio signals. Electron density varies between daytime and nighttime as well as between maximum sunspot count and minimum sunspot count.

40. Locations that receive more direct solar radiation typically have greater electron densities in the ionosphere above them than do locations where solar radiation is less direct. The ionosphere above a location at which of the following latitudes most likely has greater electron densities at every altitude than the values given in the figure?

Answer and Explanation

Your Answer is

Correct Answer is J

Explanation

General knowledge questions.

The stem of the question mentions locations that receive more direct solar radiation... According to common sense, low latitude areas are more directly exposed to sunlight, so you should choose 25°N