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The process of rain

When the rainy season arrives, it usually rains anytime from morning, afternoon, evening, even into the evening.

Meanwhile, the intensity of the rain that falls this season is also different, some are very heavy and some are drizzling.

Understanding Rain

According to the Meteorology, Climatology and Geophysics Agency (BMKG), rain is a form of precipitation or deposition of liquid or solid substances. It comes from condensation that falls from the clouds to the earth's surface.

Basically the life of all creatures is very dependent on the presence of water, one of which comes from rain. Because rain will be an important air source if we cannot access other air sources, such as rivers, lakes, or wells. In addition, rain water also has many benefits. For example to irrigate agricultural land, industrial interests, and power plants.

Rain is the main source of clean water in most areas of the world. Because the air produced by rain can help various ecosystems. No less important, the phenomenon of rain is part of the process of air formation.

When water falls on the earth's surface, it is called rain. Because, not all the water that falls can reach the earth. Many of them just evaporated. This condition often occurs in hot and dry areas such as deserts.

Some Rain Formation Process

The absorption of rainwater into the soil can be through cracks, soil pores, or through relief. Water that enters the ground will become a source of water or water reserves.

Therefore, it is important to provide water catchment areas so that there is a water reserve. Usually water catchment areas are available in forests with dense vegetation conditions.

The trees in the forest are able to strengthen the soil structure so that when it rains the water doesn't just wash away. The air will be absorbed and stored in the soil. Thus, the stored air will become groundwater.

The role of plants is also very important to facilitate the absorption of air into the soil, especially at the roots of plants. Water and roots in the soil are able to make the soil structure strong and not prone to landslides.

However, raindrops are not as simple as water falling from the sky. The occurrence of rain during several processes of the air cycle. In general, the stages of rain are divided into three, namely evaporation, condensation, and precipitation.

1. Evaporation

The first stage is evaporation, which is the process of evaporation of air. The heat of the earth's temperature from the sun will make the water of rivers, lakes, and seas evaporate the grains or water vapor. The air vapor will rise to the atmosphere, then agglomerate into clouds. As the air temperature gets hotter, more air will evaporate into the air. 

Try to pay attention when you accidentally spill a glass of water somewhere, for example on the floor or on the street. In a few hours, the air will be gone. How could that be? Yes, it can happen because the spilled water has undergone a process of evaporation.

The evaporation process can be faster if it occurs when the temperature in a place is caused by the hot sun. Evaporation is the first stage of the rain process. The sun's thermal energy makes the air in the seas, rivers, lakes, and many other sources of air on the earth's surface evaporate. If the sun's heat is higher, then more water will evaporate and rise to the earth's atmosphere.

2. Condensation

The next stage is condensation. Water vapor resulting from the evaporation process or evaporation will rise to the atmosphere, then experience condensation or condensation. In this process, water vapor will turn into very small ice particles.

Particles formed from water vapor will approach each other, then form white clouds commonly called clouds. The process of ice particles coming close to each other and forming clouds is called coalescence.

At that stage, the ice particles have a radius of about 5-20 mm. In this measure the air will fall at a speed of 0.01 – 5 cm/s. Meanwhile, the higher airflow velocity will keep the particles from falling to the earth.

Changes in air temperature are influenced by temperature differences at differences in air altitude. The higher the cloud that forms, the colder the temperature will be. In the condensation process, water vapor will rise to the top.

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