Q. Which of the following is/are correct for cyclones?

1. They are low-pressure systems with high speed winds.
2. The wind speed is anticlockwise in Southern Hemisphere.
3. Tropical cyclones are more powerful than temperate cyclones.

Select the correct answer from the codes given below:
Answer: Only 1 and 3
Notes: A small low-pressure system with very high speed winds revolving around it is called cyclone. The high speed winds revolve in anti-clock-wise direction in Northern Hemisphere and in clockwise direction in the Southern Hemisphere. Factors like wind speed, wind direction, temperature and humidity contribute to the development of cyclones. The centre of a cyclone is a calm area. It is called the eye of the cyclone. Cyclones that develop in the tropical region are different from those in the temperate latitudes. In general, tropical cyclones are more powerful than temperate cyclones.