【Science and Technology News】 April 27 news, 5 major earth you do not know the atmosphere is disappearing, on the earth we are accustomed to sunrise and work, sunset and rest, but do not know that our earth is changing every day, some changes can help human beings better survival, and some are threatening the safety of earth's biological life, may become the ignition of the earth's apocalyptic fire point.
1. The Earth's atmosphere is decreasing every day
Because of the heating effect of the sun, the gas molecules at the edge of the Earth's atmosphere become active, and when the temperature reaches a certain height, some of them can break away from the constraints of the Earth's gravity and "escape" into the universe outside the Earth's atmosphere. The process is slow, but it's always going on.
It is precisely because of this that there is so much oxygen on the surface of our earth, and the lighter hydrogen molecules are so light that they can easily fly to the outside of the atmosphere, so our atmosphere will become suitable for biological survival.
However, you don't have to worry about hydrogen disappearing around the earth one day, because hydrogen can combine with oxygen to form H2O molecules, which becomes field-stable and will not easily "escape" outside the atmosphere.
2. Dangerous Van Aaron radiation belt
At an altitude of 270 miles above Earth, there is a radioactive region formed due to the attraction of cosmic ray particles by the earth's north and south magnetic poles. The astronauts of the legendary Apollo moon landings traversed this area for a short time, but also at great risk of radiation.
In fact, the United States used nuclear warheads to detonate 250 miles over the central Pacific Ocean in 1962 with the aim of blowing up a gap in the Van Aaron Radiation Belt so that the spacecraft could pass. But the result was that instead of exploding, a human-space radiation belt was added, and the radioactivity was tens of times higher than that of Van Aaron. Because of the existence of this radiation belt, it is not so strange that more and more people doubt the authenticity of the United States moon landing.
3) The ball is experiencing global warming
Global warming is a natural phenomenon. Because people burn fossil fuels, such as oil, coal, etc., or cut down forests and incinerate them, they will produce a large amount of carbon dioxide, that is, greenhouse gases, which are highly transmittable to visible light from solar radiation, and have high absorption of long-wave radiation emitted by the earth, which can strongly absorb infrared rays in ground radiation, resulting in a rise in the earth's temperature, that is, the greenhouse effect.
Global warming will cause global precipitation redistribution, glacier and permafrost ablation, sea level rise, etc., not only endangering the balance of natural ecosystems, but also threatening the survival of human beings. Therefore, human beings should focus on solving environmental crises and prevent problems before they occur.
4) Gravity is not exactly the same
The gravity of the Earth's surface is not exactly the same, in fact, you will weigh less in the coastal areas of India, while in the southern Part of the Pacific Ocean you will weigh heavier.
The causes of this discrepancy are being studied, and the GRACE gemini satellite launched by NASA in 2002 is now making detailed measurements of Earth's gravitational field, which could help scientists find the cause of this gravitational gap as soon as possible.
5. Volcanic eruptions
Volcanic eruptions often occur in subduction zones. Volcanoes here may erupt again after hundreds of years of silence, and once they do, they are particularly violent. Such volcanic eruptions often bring about the destruction of the world for humanity. Affects the global climate
A large amount of volcanic ash and volcanic gases spewed out during a volcanic eruption, which has a great impact on the climate. Because in this case, dim daylight and wild storms, and even mud rain will plague the local residents for months. Volcanic ash and volcanic gases are ejected high into the air, and they are scattered with the wind far away. These volcanic materials can obscure sunlight, causing temperatures to drop.
Volcanoes like Yellowstone In the United States are likely to trigger supervolcano eruptions, and volcanic ash and hot magma will seriously damage our lives.