How is the desert formed? Where does the sand come from?



The desert is basically a barren land. It is the temperature changes during the day and night that play a huge role in the formation of the desert. Deserts are formed when there is little rainfall in an area for a long period of time. Deserts can be divided into different types-rock deserts, gravel deserts, deserts, and mud deserts.

We may think that the desert we see today has existed for a long time, but this is not the case. Many deserts between 8000 and 3000 BC, such as Sahara Desert , had relatively mild and humid climates. Over time, in addition to climate change, several other factors have formed the desert we see today.

For example, mountains and many other complex factors such as air pressure, cold air and precipitation are the main reasons for the formation of deserts. When the air touches the mountains, it must float and rise above the mountains. During this period, the moisture in the air falls on the mountain, forming snow on the top of the mountain. Therefore, when the air flows inland, there is little or no moisture, which ultimately leads to reduced rainfall and high temperatures.

The weathering process plays a huge role in the formation of deserts. The huge change in temperature put the rock under considerable pressure, causing the rock to crack. Although it is well known that there is very little rainwater in these areas, when rainwater falls on hard rocks, it will cause the rocks to be slowly broken, leaving only the gravel and debris scattered on the desert floor.

Temperate deserts. Compared with tropical deserts, temperate deserts are located at a higher altitude or latitude. It is the dryness of the air that causes the drought here.

Compared with ordinary deserts, semi-arid deserts have more vegetation, rainfall and humidity.The temperature of these deserts varies greatly. Semi-arid deserts are usually located in continental areas or on the edge of deserts and have the same characteristics/characteristics as real deserts.

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