atmosphere & climatology section 7 Practice Questions Answers Test with Solutions & More Shortcuts

Answer: (a)

Solar ultraviolet radiation undergoes absorption and scattering as it passes through the stratospheric layer of the earth’s atmosphere.

The ozone layer, a region of Earth’s stratosphere, absorbs 97-99% of the Sun’s ultraviolet (UV) radiation. As a result, no UV radiation at wavelengths shorter than 290 nm reaches the surface of the earth.

Answer: (d)

If there is no carbon dioxide in the earth’s atmosphere, the temperature of the earth’s surface would be less than the present because carbon emission in the atmosphere is one of the major causes of global warming.

Answer: (c)

Maritime tropical (mT) air masses affecting North America most often originate over the warm water of the Gulf of Mexico, the Caribbean Sea, or the adjacent western Atlantic Ocean.

As expected, mT air masses are warm to hot, and they are humid. During winter, when cP air dominates the central and eastern United States, mT air only occasionally enters this part of the country.

However, during the summer, mT air masses from the Gulf, Caribbean, and adjacent Atlantic are more common and cover a much wider area of the continent.

Answer: (c)

Answer: (b)

Bay of Bengal is the largest bay in the world. It finds a triangle in a shape and its bordered mostly by the eastern coast of India,

Southern west of Bangladesh and Sri Lanka to the west and Burma and the Andaman and Nicobar Islands to the east.