Science

If a storm is accompanied by lightning, we must take the following precautions:-1 Do not take shelter under an isolated tree. If you are in a forest take shelter under a small tree. Do not lie on the ground.2 Do not take shelter under an umbrella with a metallic end.3 Do not sit near a …

Precaution of strom is accompanied by lightning Read More »

Thunderstorms develop in hot, humid tropical areas like India very frequently. The rising temperatures produce strongupward rising winds. These winds carry water droplets upwards, where they freeze, and fall down again. The swift movement of the falling water droplets along with the rising air create lightning and sound. It is this event that we call …

THUNDERSTORMS Read More »

Before cloud formation, water takes up heat from the atmosphere to change into vapour. When water vapour changesback to liquid form as raindrops, this heat is released to the atmosphere. The heat released to the atmosphere warmsthe air around. The air tends to rise and a drop in pressure. More air rushes to the centre …

Cyclones Read More »

: In our country they are not very frequent. A tornado is a dark funnel shaped cloud that reaches from the sky to the ground. Most of the tornadoes are weak. A violent tornado can travel at speeds of about 300 km/h. Tornadoes may form within cyclones.

1 Do not drink water that could be contaminated. Always store drinking water for emergencies.2 Do not touch wet switches and fallen power lines.3 Do not go out just for the sake of fun.4 Do not pressurise the rescue force by making undue demands.5 Cooperate and help your neighbours and friends.

Thunderstorms develop in hot, humid tropical areas like India very frequently.The rising temperatures produce strong upward rising winds. These winds carry water droplets upwards, where theyfreeze, and fall down again. The swift movement of the falling water droplets along with the rising air create lightningand sound. It is this event that we call a thunderstorm.

The centre of a cyclone is a calm area. It is called the eye of the storm. A large cyclone is a violently rotating mass ofair in the atmosphere, 10 to 15 km high. The diameter of the eye varies from 10 to 30 km . It is a region free of clouds and has …

Structure of a cyclone Read More »

We should not ignore the warnings issued by the meteorological department through TV, radio, or newspapers.§ We should — make necessary arrangements to shift the essential household goods, domestic animals and vehicles, etc. to safer places; avoid driving on roads through standing water, as floods may have damaged the roads; andkeep ready the phone numbers …

Action on the part of the
people Read More »

A cyclone is known by different names in different parts of the world. It is called a ‘hurricane’ in the American continent. In Philippines and Japan it is called a ‘typhoon.