Question

_________ are strong moisture laden winds with low pressure at the center surrounded by high pressure.
A. Cyclones
B. Tsunamis
C.Hurricanes
D.Earthquake

Answer 1

Hint: Areas of high and low pressure are caused due to ascending and descending air. As the air warms it ascends, directing to low pressure at the surface. As air cools it comes down, directing to high pressure at the surface.

Complete Answer: There are two types of cyclones: middle latitude cyclones and tropical cyclones. Mid-latitude cyclones are the major reason for the winter storms in the middle latitudes. Tropical cyclones are also known as hurricanes.

Looking at the options above:

Option a: Cyclones are severe storms supported by strong winds and heavy rains which are inflicted due to strong winds hitting around the main central area having low atmospheric pressure. This option is correct.

Option b: A tsunami is caused by the displacement of a large volume of water. They are basically earthquakes, volcanic eruptions and other underwater eruptions above or below water. This option is incorrect.

Option c: A tropical cyclone is an instantly revolving storm system which is defined by a low-pressure center. It forms over tropical and subtropical waters. This option is incorrect.

Option d: Earthquakes are induced when underground rocks break suddenly along a fault and discharge of energy causes the seismic waves that make the ground shake. This option is incorrect.

Hence, the correct option is a.

Note:
- The strongest tropical cyclone ever to make landfall in India was the 1999 Odisha cyclone.
- Cyclone Amphan of 2020 was the costliest cyclone to hit India in West Bengal and caused $14 billion worth of damage.
-The most deadly cyclone to hit India was the 1964 Rameswaram cyclone.