Theme of this issue: Thick Shield
Keywords in this issue: solar ozone layer rain
The sun is a planet killer The sun's energy is extraordinary The sun can create or destroy life
The total amount of radiation from the sun means that there should be no life on the surface of the earth
How the core atmosphere and life itself join forces to form a thick shield to protect all things in the world, the earth is relying on this thick shield and armor to light up life...
Added knowledge point: "The extreme temperature when the sun is shining is 250 degrees, and it can reach minus 250 degrees when leaving the sun's shadow"
After watching: I only knew that the sun was very hot before, but I didn't expect it to be very cold in its shadow!
Growing Knowledge Point: "The Sun Has Countless Secret Weapons to Destroy Us Photothermal and Even Deadly Flares"
After watching: I used to mistakenly think that the sun gives us light and heat, and it is a pure and good planet. Light and heat are the "gifts" it brings to the earth, bringing us light and warmth. Destroy us!
Reminds me of what the ancients said about fortune and misfortune!
Growing knowledge: "Mars, billions of years ago, was as likely a cradle of life as Earth was
But the sun's radiation leaves it a wasteland
Let the oceans on Mars evaporate into space"
After watching: "Poor Mars reminds me of seeing a report that there were traces of water on Mars."
Growing knowledge: "Earth is closer to the sun but it has a whole range of defenses, from the edge of space to the depths of the ocean
Even extreme environments with extreme waters have become an important part of the Earth's defense system."
Added knowledge point: "Radioactive lava proves that there is a nuclear furnace in the interior of the earth, a spherical object with extremely high temperature and a very large size
The sphere is filled with molten iron and nickel
These substances are constantly rolling up and down in this furnace and all the metals are constantly churning and creating a magnetic field."
After watching: About the magnetic field, I have only heard its name in science fiction movies before. Through its name, I guess it is like an attraction like a magnet!
Today, through the popular science in the easy-to-understand language in the program, I really understand the meaning of these two words and the important protective effect of the magnetic field on the earth!
Increased knowledge: "This magnetic field stretches 650,000 kilometers straight into space and tightly wraps the entire Earth
It's a massive force field that deflects lethal radiation that can destroy everything
We don't see this magnetic field most of the time, but we can see it when a solar flare erupts
We call it the aurora everyone is eager to see the aurora in person
Green and red all these fuzzy colors like a giant phantom printed on the curtains
Auroras are one of those thick shields that protect Earth from the sun"
After watching: Wow! It turns out that the aurora is the protective film of the earth! After understanding this, I feel that the aurora is more precious and dazzling!
Growing Knowledge: "The Sun Has Other Weapons of Destruction, Light
Ultraviolet rays radiated to the sun are extremely destructive
Any life on Earth would suffer fatal consequences if it faced the sun directly
Only 2% of the ultraviolet rays reach the earth's surface
If all the ultraviolet rays hit the earth for a few seconds, our skin would burn"
After watching: I have a deep understanding of sunburn. One summer, my parents and a few relatives took me to Tianjin and Beijing for a trip without sunscreen. Often, my left and right arms were tanned in the hot sun. Arms are peeling.
It turns out that the culprit is the 2% ultraviolet rays!
Growing knowledge: "And just starting UV radiation disrupts genes making healthy cells cancerous
If all the energy of the sun is radiated to the earth, plant microorganisms will stop reproducing
Species on the Earth's surface will gradually become extinct"
After watching: 2% of the skin is dark and molted, and 100% of the biological ashes!
Growing knowledge: "Most of the sun's deadly UV rays to us are intercepted midway by a thin layer of molecules
This layer of molecules is the ozone layer.”
After watching: I heard the word ozone layer before, and I thought it was a smelly oxygen. Now I understand its importance to the earth and human beings. It is really fragrant for the earth and us! I personally want to temporarily change its name to "Oxygen Layer"
Added knowledge point: "The ozone layer is the second line of defense in the sky, it is extremely important and extremely fragile
30 years ago there was a hole in the ozone layer so there are bans on ozone-destroying chemicals all over the world and the ozone hole is gradually being repaired”
After watching: Humans have a long snack! Don't wait until the brink of crisis makes a big mistake
Growing knowledge: "This is a fragile planet that lives in a crisis-ridden universe trying to protect all life on its surface
That's when you'll also realize that we're doing everything we can to protect the planet
The thick shield of the ozone layer has protected us for over 10,000 years, long before humans were apes, long before the birth of dinosaurs
Without the ozone layer, there would be no human beings"
Growing knowledge: "Long ago the ozone layer didn't exist and the only safe place to live was underwater
If it weren't for a new species emerging 3 billion years ago that found a way to use sunlight efficiently, we might still be living underwater today
As early as billions of years ago, ancient creatures were the first to use the energy of the sun, and at the same time, they produced a waste product called oxygen.
At first it was just a few sporadic species and then it evolved into thousands
Then hundreds of millions of creatures started spitting out oxygen
Oxygen rises higher and higher until it enters the atmosphere and there is a strange phenomenon where this oxygen is converted into the protective ozone
Under the protection of the ozone layer, the first microbial fungi and some plants migrated from the water to live on land
Subsequently, more oxygen is produced, which further strengthens the earth's resistance to the sun's ultraviolet rays
Now the ozone layer has reached an unprecedented thickness, and our planet is lit up
Protected by the ozone layer, the earth opens the door to a new world for all living things"
After watching: Circle the key! This is a great miracle created by ancient creatures!
Thanks to those ancient creatures who made the earth infinitely alive and allowed us to live in peace on land! We must protect the atmosphere well, which is at stake with our lives!
sun destructive third weapon heat
Carbon dioxide is an invisible killer
Venus is hot because of carbon dioxide
Increased knowledge: "The sun's heat can steam and destroy entire planets, especially those covered in a thick layer of carbon dioxide"
After watching: The brighter the sun, the more vicious it is! It's too lethal
Growing knowledge: Earth has its own monitoring system that keeps carbon dioxide levels in the atmosphere consistent
Earth relies on rain-based air conditioning systems
Rainwater carries substances that can dissolve carbon dioxide
Even some rainwater is acidic enough to melt rocks
Eventually, the rainwater, which carries the sediment and contains carbon dioxide, will be washed into the river.
After the river enters the sea, it spit out a large amount of sediment. The carbon that was originally locked in the atmosphere was buried in the sea, so the temperature of the earth dropped."
After watching: Another did not expect that in addition to promoting crops and cooling the earth, rain also "plays" an important role in digesting carbon dioxide and protecting the earth!
Here, I also think that too much rain will become a disaster. The so-called excess is too much. The truth is that we must maintain balance and understand that nature must not be out of balance!
Summary of Key Growth Knowledge: "This cycle between rainwater rivers and volcanoes over the past few million years has kept carbon dioxide in the atmosphere in balance and kept Earth warm in the cold of space.
But it won't dry out alive in the sun
Every system on Earth, whether it's volcanoes or those ocean currents, is subtly influencing and shaping the planet."
After watching: The earth is a living organism. The reason why "she" can remain so fresh and full of vitality depends on this series of effective protective layers, so human beings must also maintain these protective layers as much as possible. Try not to destroy them for desires and interests it!
Growing knowledge: "The earth itself is a living organism and it is alive
Ancient natural systems that defended Earth for decades are now undergoing dramatic changes
Humans in modern society emit sixty times more carbon dioxide than volcanic emissions
Earth's air conditioning systems are running out of time to handle them and how much the world is warming depends on how hard we change the status quo."
After watching: You can still live by doing evil in the sky!
I hope that we humans will no longer be blinded by greedy development desires and economic interests. Those stupid acts of self-destruction that destroy nature and harm the earth must stop!
Hubble observations capture the moment when a star like the sun dies. In five billion years, the size of the sun will become larger and larger until it engulfs the earth. When such a doomsday comes, all matter and life on earth will be reduced to ashes.
Impressive growing knowledge: "The Earth has protected us from the sun for billions of years, which is why everything on Earth's surface thrives.
As a creature, we need the protection of the earth. The thick shield that the earth has built for us is like a blanket for us to live on earth safe and sound.
Everything works just right We wouldn't exist without it right
You, me and each of us should cherish the luck that we got, cherish everything that we got, and cherish this lit planet."
After watching: I was moved to tears when I saw this! The natural system of the earth is really like a great mother. Everything is like its children. We must repay and cherish and protect the environment!
Earth is a warm home for all of us humans, animals and plants! It should be noted that the lips are dead and the teeth are cold, and the hair will not be attached to the skin! Without Earth, we would be homeless!
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