Answer: Option [B]The vertical movement of air is termed as air current. The vertical movement of air is called air current. Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear 'lighter'. Air currents can be caused by differences in temperature, pressure, or impurity concentration.
Answer: Option [D]Katrina is the name given to Hurricane. Hurricane Katrina was a tropical cyclone that struck the southeastern United States in late August 2005. The hurricane and its aftermath claimed more than 1,800 lives, and it ranked as the costliest natural disaster in U.S. history.
Answer: Option [C]‘Green House Effect’ means trapping of solar energy due to atmospheric carbon-di-oxide. Green House Effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric green house gases and is re-radiated in all directions. It results an increase in average temp of the planet.
Answer: Option [D]Global warming is expected to result in All of the above.
- Increase in level of sea
- Change in crop pattern
- Change in coastline
Answer: Option [C]The correct answer is Equatorial. Equatorial regions usually experience 2000 mm of rainfall or more in a year. Rainfall is high for most of the year. Many equatorial regions are affected by the ITCZ.