In a simplified picture, we know that one tectonic plate collides with another, forming a mountain range. But there are also processes such as erosion and earthquakes that affect the growth of mountains.
Most of our planet is covered with water unsuitable for drinking. The world ocean covers 70% of the Earth's surface and accounts for approximately 97% of all water on the planet. On average, one liter of seawater contains 35 grams of salts (mainly sodium chloride). It seems like it's a little bit. However, it turns out that there are 35 million tons of salt in one cubic kilometer of the world ocean, and in total there are about 1,386,000,000 cubic kilometers in the ocean. So where did this salt come from?
A study by an international group of scientists casts doubt on the generally accepted theory of the formation of continents.
The probability of a repeat earthquake in the same place is only 5%, but that's exactly what happened in the United States on the eve of Independence Day.
Sinkholes are one of the most incredible forms of relief. They are formed due to the movement of the soil in karst, that is, water-soluble rocks. When the groundwater dissolves and leaches the layers of rocks, the earth subsides – and a funnel appears. The depth of some does not exceed a meter, others go underground for tens and hundreds of meters.