How many years does an ice age occur in an over adolescence to an ice age?

Ice ages, also known as glacial periods, are periods in which the Earth's land and oceans were covered by ice during certain ages, and these ice areas were much larger than the areas that are now covered by ice. During the Ice Age, ice covered large swathes of the world's land, and the climate in these regions was very cold; There is a lot of ice in the ocean, and the ground is also covered with thick ice. At the same time, sea levels are lower because more water is stored in ice.

Ice ages can last more than a million years, and there have been 11 ice ages since the formation of the earth, the last ice age is called the "Great Ice Age", which occurred 18,000 years ago and ended 10,000 years ago, when about one-third of the Earth's land was covered under 240 meters of ice.

During the Ice Age, the temperature dropped, changing the plant phase and the habitat of organisms on the earth's surface, and many organisms faced extinction or forced migration, and only species that could adapt to the environment survived.

Ice ages occurred during the two geological periods known as the end of the Precambrian (600 million years ago) and the Ordovician (about 100 million years ago). Remnants of the Ordovician Ice Age can still be seen in today's Sahara Desert, and the stones in a vast area bear signs of wear and tear from the passage of ice. Scientists believe that there have been eight ice ages in the history of the Earth

During the Ice Age, there were large areas of snow and ice cover in many places in Europe, northern Asia, and North America, and the current ice caps and ice formations were left over from that time. The movement of ice changes the land. The ice scrapes off large swaths of rock, and the scraped stone chips accumulate on the edge of the ice, which is called an moraine.

In warmer climates, when the snow melts and the ice shrinks, the moraines remain on the ground and are carried to other places by the water that flows from the melting ice. Mountains and basins that were once covered by ice have formed many new lakes and new channels.

In addition, some scientists** believe that the next ice age of the Earth will occur as early as 10,000 years later, provided that human activities do not have a serious impact on the Earth during this period.

Some scientists** say that the next ice age of the Earth will occur as early as 10,000 years later, provided that human activities do not have a serious impact on the Earth during this period.

Small-scale ice ages occur every 2-40,000 years, and large-scale ice ages occur every 100,000 years.

250 million years. The Sun orbits the Milky Way in 250 million years. Moreover, when the sun revolves around one time, the sun will also be affected by the center that leads the galaxy to orbit, so that during the 250 million years, the distance between the sun and the galactic center of the galaxy will also be far and near.

Due to the apogee point, the temperature plateau generated by the radiation heat of the galactic core is lower than the normal temperature plateau, so that the temperature of the entire pure body of the solar system will be reduced at this time, so the earth will fall out with the water, so that the earth will enter the ice age. <

250 million years. The Sun orbits the Milky Way in 250 million years. Moreover, the sun revolves once and the sun is also the center that leads the galaxy to orbit, so that the distance between the sun and the galactic center of the galaxy for 250 million years is also far and peristose.

Due to the apsia, the temperature plateau generated by the heat radiated by the galactic core is lower than the normal temperature plateau, resulting in a decrease in the overall temperature of the solar system at this time, so the earth falls out with the water, causing the earth to enter an ice age.

At its peak, famine was raging in northern Europe. It is believed that half of the population of Norway and Sweden died in famine. At the same time, snow and ice are spreading around the world:

Parts of Ethiopia were covered with snow, and crops failed in China (this was indeed the end of the Ming Dynasty - the Chongzhen period). The ice age is theoretically a climatic phenomenon and should have occurred, but some experts have pointed out that the greenhouse effect caused by carbon dioxide will no longer cause the ice age to occur, but there is a great deal of controversy in the scientific community about this conclusion, and there is also a debate about whether it will occur in the future.