Q 1.

With reference to tropical cyclones, consider the following statements:

1. Tropical cyclones generally derive their energy from warm ocean waters.
2. The Coriolis force is zero at the Equator, making tropical cyclone formation difficult there.
3. Tropical cyclones generally intensify after making landfall because surface friction increases their energy.
4. A storm surge can cause coastal flooding even before the centre of a cyclone makes landfall.

Which of the statements given above are correct?