When was the Ice Age? How many years ago was the 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.

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

The main factors that formed the Ice Age:

1.The decrease in sunshine in the summer half of the year is the main reason. The variation of sunshine in the summer half year is related to the change of three parameters: eccentricity of the Earth's orbit, the angle of intersection of the ecliptic plane and the equatorial plane, and the precession.

2.The Sun's luminosity is minimal when it moves near the galactic center, cooling the planets and creating the Great Ice Age on Earth.

3.The uneven distribution of matter in the Milky Way galaxy caused the Great Ice Age on Earth to form the Great Ice Age when the Sun passed through the densely densely populated areas of interstellar matter.

4.It is directly related to the drop in temperature on the Earth's surface. The rise and fall of temperature is affected by factors such as atmospheric composition and changes in solar radiation energy, as well as various factors in the orbit of the earth and the sun.

Small-scale ice ages occur every 2-40,000 years, and large-scale ice ages occur every 100,000 years. Scientists believe that the irregularity of the Earth's orbit changes how much energy it absorbs, causing the Earth to cool suddenly. But studies have shown that irregularities in the Earth's orbit account for only 1% of the Earth's absorption of solar energy.

170w years ago, what do you still mention about it!

Think about the rest of your life!

The Ice Age is a period when the Earth's ice cover expands dramatically.

Ice ages are divided into the Great Ice Age and the Xiaoice Ice Age.

During the Great Ice Age, the ice cover area was more than 45° north latitude, and the average surface temperature during the Great Ice Age was about 0.

The ice cover during the Xiaoice period expanded to between the Arctic Circle and 45° north latitude, and the average surface temperature during the Xiaoice period was about 5.

The ice cover area of the interglacial period is within the Arctic Circle (66°34 north latitude), and the average surface temperature during the interglacial period is about 15.

Inner Mongolia Autonomous Region Xilin Gol League East Wuzhumuqin Banner is located at 116 degrees east longitude and 45 degrees north latitude).

The Ice Age, a period in geological history when there has been large-scale glacial activity with a cold climate, is called an ice age. There have been three such glacial periods, namely the Late Precambrian, the Carboniferous Permian and the Quaternary.

1.Postcambrian (523 million years ago to 55 million years ago) 2The Carboniferous-Permian glaciation occurred hundreds of millions of years ago, from the middle of the Carboniferous to the beginning of the Permian, because the Carboniferous and Permian belong to the Late Paleozoic, also known as the Late Paleozoic glaciation, and are also the largest ice in the Phanerozoic.

3.At the beginning of the Quaternary period, cold climate zones migrated to the middle and low latitudes, resulting in the widespread development of ice sheets or glaciers in high latitudes and mountains. This period began about 2 million to 3 million years ago and ended 1 to 20,000 years ago.

One million years ago, when the world was hit by a cataclysm, the Ice Age came.

Was there a biological extinction during the Ice Age.