In which year was Orissa hit by a cyclone?

Leaves of trees, banner or flags flutter when wind is blowing. Why?

Increased wind speed is accompanied by ………………… air pressure.

Wind currents are generated due to ………………… heating on the earth.

………………… and ………………… have made possible to issue a cyclone alert, i.e., 48 hours in advance.

Air contracts on heating and expands on cooling.

Winds carrying water vapours bring rains.

Tornadoes are very frequent in our country.