Passage IV

Certain layers of Earth’s atmosphere absorb particular wavelengths of solar radiation while letting others pass through. Types of solar radiation include X rays, ultraviolet light, visible light, and infrared radiation. The cross section of Earth’s atmosphere below illustrates the altitudes at which certain wavelengths are absorbed. The arrows point to the altitudes at which solar radiation of different ranges of wavelengths is absorbed. The figure also indicates the layers of the atmosphere and how atmospheric density, pressure, and temperature vary with altitude.

19. The ozone layer selectively absorbs ultraviolet radiation of 2,000-3,000 A wavelengths. According to this information and the data, which atmospheric layer contains the ozone layer?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

As can be seen from the figure, 2000-3000 A corresponds to ultraviolet light, and it is intercepted when it hits the stratosphere. According to the question, the ozone layer absorbs ultraviolet light, so the ozone layer is in the stratosphere