What can be done on both the Moon and the Earth?

Choose C. The Moon is rich in mineral deposits, and it is reported that there are more reserves of rare metals on the Moon than on Earth. There are three main types of rocks on the moon, the first is the lunar sea basalt, which is rich in iron and titanium; The second is plagioclase, which is rich in potassium, rare earths and phosphorus, and is mainly distributed in the lunar highlands; The third type is mainly breccia composed of 0 1 1 mm cuttings of ply grains.

Moon rocks contain all the elements of the earth and about 60 kinds of minerals, of which 6 minerals are not found on the earth.

Scientists point out that in order to develop the moon, it is necessary to carry out a comprehensive exploration of the moon, understand the resources of the moon, and gradually develop the resources. The moon is extremely rich in mineral resources, and the 17 most common elements on the earth abound on the moon. Taking iron as an example, the 5 centimeters of sand on the surface of the moon alone contains hundreds of millions of tons of iron, while the entire lunar surface has an average of 10 meters of sand.

Iron on the surface of the moon is not only abundant, but also easy to mine and smelt. It is reported that the iron on the moon is mainly iron oxide, as long as oxygen and iron are separated; In addition, scientists have developed ways to make cement and glass from lunar soil and rocks. On the surface of the moon, aluminum is also abundant.

The lunar soil is also rich in helium-3, and helium fusion using deuterium and helium-3 can be used as an energy source for nuclear power plants, which does not produce neutrons, is safe and pollution-free, and is an easily controlled nuclear fusion, which can not only be used in terrestrial nuclear power plants, but is also particularly suitable for astronautics. It is reported that the content of helium-3 in lunar soil is estimated at 715,000 tons. For every tonne of helium-3 extracted from lunar soil, 6,300 tonnes of hydrogen, 70 tonnes of nitrogen and 1,600 tonnes of carbon are obtained.

Judging from the current analysis, due to the large reserves of helium-3 on the moon, it is undoubtedly a relief for the earth, which is relatively short of energy in the future. Many spacefaring powers have made the acquisition of helium-3 one of the important goals of the development of the moon.

The answer is ca Bird's Fragrance It means that you can hear and smell the sound, and there is no air on the moon, so there is no medium for the transmission of sound and smell, so you can't hear the sound.

b Listening is also not possible because there is no medium for the transmission of sound.

d Meteor tail length means that meteors can be seen, as we all know, meteors are caused by foreign objects entering the atmosphere and violently rubbing and heating the atmosphere, there is no gas on the moon, even if there are things outside the sky, they also fall directly into the moon.

c Mining The Moon has suction and mines, so mining mines can be achieved on the Moon.

Obviously, it is c mining mines The surface of the moon is close to a vacuum A birds are singing and flowers are fragrant b Listening to your ears is obviously impossible d The tail length of a meteor is a high-speed friction between a comet and the atmosphere to produce high-temperature combustion The moon has almost no atmosphere So the tail of a d meteor on the moon cannot be done.

I choose D, the first three seem to be difficult to achieve, the moon also has an atmosphere, and the tail can also appear when the meteor passes by.

Mining mines. The moon has no birds and no flowers, a mistake.

There is no atmosphere on the moon and sound cannot travel b false.

The moon has no atmosphere, and when it flies in, it will not oxidize with oxygen and burn d.

c The future of mineral resources is to develop into space.

dMeteor tail length and cMining mines.

c. Mining Mine d. Meteor tail length.

What would happen if the moon were brought to Earth? If the moon is sent to the earth, it will make the load on the earth become heavy, because the words on the moon are also a carrier of energy.

If the moon were to come to Earth, it would cause a huge disaster to Earth.

What would happen if the moon were brought to Earth? This question is also quite strange, you said that the moon and the earth are two different planets, and you get the earth, so what about it, it becomes two balls, and it comes back.

Analyze your brain hole question from several angles:

1. If the moon is brought up to the earth, the earth's rotation may slow down due to the increase in mass;

2. Since there is no moon, it will definitely be dark at night, and there will be many less romantic stories, including the eternal swan song that is suspected to be frost on the ground.

3. Without the moon in the sky, there will be no tides in the sea, and it is difficult to say how the woman's menstrual period will change, and it may be that all species on the earth will be affected, or it may not have to hit the earth, just land her safely on the earth, and all the species on the earth will be destroyed one after another.

How important is the Moon to Earth? It may be beyond the imagination of many people, it is no exaggeration to say that there is no human being without the moon, but it is not as simple as not being able to enjoy the moon without the moon. For the Earth, without the Moon, the Earth would not be what it is now.

If there is no moon, the earth's operating state will not be what it is now, its speed will be much faster than now, it is said that the earth was only a few hours a day when it was first formed, and then it was because of the moon that the earth's rotation gradually slowed down, because the moon and the earth have a traction force between each other, and the moon's traction on the earth caused the tidal action on the earth, such as the ebb and flow of the ocean on the ocean, and the speed of the moon's revolution is much slower than the speed of the earth's rotation, which also causes the earth's rotation to be slower and slower, Until today, the Earth does not revolve once in 24 hours.

More importantly, if the moon does not orbit the earth in a relatively stable orbit, the state of the earth will not be so stable, the swing of the earth's axis will be greater, and even turn over and move forward, in this way, the climate on the earth may present a chaotic state, and the ecological environment of the earth will be greatly affected.

For us human beings, the importance of the moon is not only to admire the moon, not only at night but also to the moonlight, not only the ebb and flow of the ocean can be ** and emotional, the moon also has a certain impact on the earth's atmospheric circulation, making the earth's climate more suitable for the survival of life.

But the moon to the earth's life is not the most helpful is not as above, but its cleaning effect on the extraterrestrial visitors, scientists believe that if there is no moon, the earth will be hit by asteroids or comets The probability will be greatly increased, some people may not believe it, but you only need to look at the dense craters on the moon to know, every larger crater collapse orange mountain is formed by an asteroid impact, if there is no moon around the earth to clean up those extraterrestrial visitors, Then some large asteroids will likely hit the earth, so that the earth suffers a global or regional biological extinction disaster, human beings have evolved from apes to humans and now, a total of more than a million years, if a huge asteroid hits the earth in this time, it will cause a global disaster, then human beings will also be very likely to be extinct by those extraterrestrial visitors. Therefore, the moon is also the patron saint of human beings and even life on the earth, without it, everything on the earth and even on the earth would not be what it is now.

This time is unpredictable, because it requires adequate equipment and good physical fitness to get to the moon.

I think it will be at least another 50 years, because this kind of business for traveling to the moon has not yet been developed, so it may take some time.

It will take 50 years, because now the level of human astronautics is very high, and there are already people who can go to space, and in a few years they can go to the moon.

There is no doubt that cities on the moon will be built underground. For astronauts who stay on the moon for a long time, radiation from the sun and the universe is an important problem, and the cheapest protection device is epidermal soil. We obviously need places to connect the surface of the moon, but these should be small and not permanently inhabitable.

There will be huge underground greenhouses here. Because we need to store food, produce oxygen, recycle waste, and ensure human mental health, it is difficult for us to overcome the difficulties of greenhouses. Every kilogram of supplies transported from Earth to the Moon costs thousands of dollars, so our goal is to try to get close to 100%.

Above the base will be a huge solar array. Solar energy plays better on the Moon than on Earth, so there is no need to worry about the atmosphere. The base also needs a vital battery pack to store energy during the long nights.

At that time, there may have been a better energy storage device than batteries, but something was needed.

Especially in the beginning, space is limited. It's a good idea to build a small bunker-like building. But obviously, in psychology, we should build a base.

There will be artworks, sunlight shining through the surface of the moon and a library (electronic library, of course).

Eventually, there will be a gymnasium. One-sixth of gravity will cause serious damage to the astronaut's body. There may also be a centrifugal separator that allows residents to experience first-hand the higher gravity of the environment than they are subjected to on a daily basis.

We need a lot of research in this area. (Is one-sixth gravity enough to keep an astronaut healthy?) If not, how much higher gravity can be achieved to make the astronauts healthy?

But there is no doubt that the inhabitants here need to be active.

That's a good question, and I think the answer to this question depends entirely on whether technology can alter gravity or whether people can accept one-sixth of Earth's gravity. These facts affect many things, because on the moon an average person should be able to jump 5 or 6 feet, there is no doubt about it, and the architecture and urban planning of cities on the moon will also take into account this fact. The hoop on the basketball court will be twice as tall as on Earth, or we won't change the height so that everyone can have a Grand Slam.

I think architects are going to take this into account so that they can design buildings that make people jump around. Because the gravity on the moon is so small, you won't fall to the ground very hard at all, so the probability of injury is very small.

But in order for this to be viable, people will make some kind of cupola with an artificial atmosphere, after all, who wants to wear a spacesuit all the time? Therefore, I think this life will be full of man-made objects.

Since the moon is gray, I would be able to imagine planners using more colors when building cities, like in some similar cities such as Italy. Scandinavians are known for their bright and happy living spaces, as it is dark there for six months of the year.

It doesn't fly on Earth, but you can easily fly with every step you take on the Moon, because the gravitational pull of the Moon is not as great as that of the Earth.

It can break away from gravity and jump very high. Because there is no gravity on the moon. So we can jump very high.

Because there is no gravity on the moon, it is possible to jump far and high on the moon, and humans will always be in a state of afloat, realizing a state where they can fly and reach very high things.