Rain

Rain

1 - Rain:

 Is a phenomenon of natural phenomena represented in the fall of water droplets resulting from the formation of clouds in the sky and vary in the intensity of light rain to medium rain to heavy rain and thunderstorms and those most dangerous types of rain where accompanied by a strange phenomenon and Hua thunder and is a very loud and terrifying sound in addition To lightning and Hua is a bright light carrying dangerous and deadly electrical charges.

2 - Rainfall:

 Rainfall in most parts of the world, in the tropics in the form of rain (ie water drops), but in Antarctica and in some other places in the world it is snow. But sometimes cold and snowy grains have fallen on tropical places recently as a result of climate change, which is threatening all life on the planet, including humans.

3 - Rain is necessary for life:

 Because it supplies the human, animal and plant water, and notes that the manifestations of life are almost non-existent in areas that suffer from lack of water, or lack of rainfall on them. Rain helps prevent the loss of valuable topsoil by stopping sandstorms. Rain also cleans the air from dust and chemical pollutants. Rain can also be as harmful as the acid rain phenomenon that forms when it reacts

Moisture with nitrogen oxides and sulfur dioxide. These chemicals are emitted from vehicles, factories and power plants. These rains contaminate the waters of lakes and streams, posing a threat to aquatic life. Too much rain can create communication disruptions, cause flooding, destroy property and accelerate loss of topsoil.

4 - Types of rain:

1 - ascending rain: It is the rain resulting from the rise of humid air as in tropical areas where the heat intensifies and the air currents escalate to the upper layers of the atmosphere to cool and condense their water vapor falling rain and stop the abundance of this rain on two factors: the amount of water vapor carried by the air Then the temperature of the upper layers to which the clouds rise and this type of rain is frequent in the tropical and tropical areas, where it falls regularly in all seasons of the year and the air escalation occurs during the hot day and rain falls in the evening and clouds associated with this type of rain are cumulus and characterized by rain A heavy barrage in the form of a barrage may damage crops and runoff may sweep away the soil.

2 - Terrain rain: It is rain caused by the interception of plateaus or mountains wind laden with water vapor where the wind rises above the heights cooled and condenses the steam falling rain such as monsoon rains and regular wind rains and mountain slopes facing the winds more rain than the slopes of the demonstration called Dry slopes that do not fall rain in the area of ​​the rain shade and the rain increases in quantity as the height increases until it reaches a certain level and then decreases.

3 - Cyclonic rain: It is the backwind of the frequent air droughts called hurricanes, such as the rains of the Mediterranean and the rains of Western Europe and caused by the passage of hurricanes or air dips, as it happens that the cyclone attracts two different source air currents in terms of temperature, such as a current coming from the north Cold and warm from the south or warm and when they meet the process of escalation of warm air because it is lighter and when it rises, it cools and condenses its water vapor falling rain and more rain when the upward air is abundant moisture.