Tropical Cyclones and Weather Phenomena

If the surface air pressure is 1,000 mb, the air pressure at 1 km above the surface will be:

• 700 mb

• 1,100 mb

• 900 mb

• 1,300 mb

The Inter Tropical Convergence Zone (ITCZ) normally occurs:

• near the Equator

• near the Tropic of Cancer

• near the Tropic of Capricorn

• near the Arctic Circle

The direction of wind around a low-pressure area in the northern hemisphere is:

• clockwise

• perpendicular to isobars

• anti-clockwise

• parallel to isobars

Which one of the following is the source region for the formation of air masses?

• the Equatorial forest

• the Himalayas

• the Siberian Plain

• the Deccan Plateau

The cyclones that cause destruction on coastal regions are called:

• Tornadoes

• Thunderstorms

• Tropical cyclones

• Extratropical cyclones

The Coriolis force is responsible for:

• The formation of cyclones

• The rotation of tropical cyclones

• The movement of ocean currents

• All of the above

In a mature tropical cyclone, the region of calm with subsiding air is called:

• The eye wall

• The eye

• The rain band

• The outer region

What is the primary source of energy for tropical cyclones?

• The Earth's rotation

• Condensation of water vapor

• Solar energy

• Geothermal heat

The process of occlusion in an extratropical cyclone involves:

• Warm air rising above cold air

• Cold air overtaking warm air

• The cyclone dissipating

• The formation of a new front

Which of the following is a characteristic of an extratropical cyclone?

• It has no frontal system

• It forms over warm tropical oceans

• It has both warm and cold fronts

• It moves from east to west