At this moment, in the direction of the valley floor just now, a large amount of magma erupted and fell into the mountains, and all the trees burned, emitting billowing smoke, and a few people in the distance could smell the smell of anxiety. Pen "Fun" Pavilion www.biquge.info

However, after a false alarm, he was finally out of danger, and Xiao Shennong broke the silence first: "It's okay now, it's really okay!" ”

Xiao Shennong knew that it was okay, but Yan'er and Lingyun didn't think so.

"What kind of monster is this? How is it so powerful? Ling Yun was a little out of control.

"I've never heard of such a powerful spirit beast in this wild domain, what kind of existence is this?" Yan'er looked at the invisible wind and thunder wings on Xiao Shennong's back, his face was full of envy, and then he said excitedly: "You actually have such a magical magic weapon as flying wings?" Thank you so much, by the way, such a strong beast must be good at sneak attacks, otherwise we are at the bottom, and he will come out? Little Shennong, let's leave quickly, right? ”

After the Yan'er girl finished speaking, her face was a little hot, and now that she wanted to leave quickly, she could only use the flying wings on Xiao Shennong's back, and she had to let him hold her hand again......

"Yes, hurry up, this monster swallows fiery magma, very fierce, we should not be able to resist, escape!" Ling Yun directly grabbed Xiao Shennong's hand and said, "Just like just now, run away!" ”

Xiao Shennong was stunned for a moment, and he was a little flattered when the beauty took the initiative to grab his hand, but reason told him that now was not the time to tease the beauty, so he simply gently took Ling Yun's hand away and said, "Senior Sister Lingyun, it's really okay for me to say it!" This is not a monster! ”

"Not a monster?" The two beauties said in unison.

"Yes, it's not a monster, it's a volcanic eruption!" Xiao Shennong said.

"Volcanic eruptions? What kind of monster is a volcano? "Ling Yun is a little crazy, Xiao Shennong, this young man, it's not simple, just now, Ling Yun had to look at Xiao Shennong differently, one is that he actually has a powerful earth armor, and the other is that he has flying wings, the most important thing is that this terrifying scene just now, he actually said that he is not a monster? What kind of volcanic eruption is it? Whether it's true or not.

"Yes, little Shennong, what the hell is a volcano?" Yan'er also asked nervously.

Xiao Shennong shook his head, about volcanoes, there is a detailed introduction in the high school geography textbook, and his heart said, the two beauties are now completely convinced of themselves, presumably they don't know what volcanoes are, so it's better to popularize science, and then go back and ask for a map with confidence......

So, Xiao Shennong said: "Volcanoes are a common geological phenomenon. Between 100 and 150 kilometers below the earth's crust, there is a liquid zone in which molten silicates containing gaseous volatiles, known as magma, are present at high temperatures and pressures. Once it washes out of the surface of the earth from a weak part of the earth's crust, it forms a volcano. Volcanoes are divided into active, extinct, and dormant volcanoes. Volcanoes are the windows to the blazing heart of the earth, the most explosive force on earth, and when they erupt, they can eject a variety of materials. The magma that erupted just now could reach a temperature of thousands of degrees, so the surrounding trees were burned. Fortunately, this volcano is not the largest, and judging by the height of the magma that erupted, it is estimated that this volcano will subside. ”

"Spewing out magma? What the hell is going on with this magma? Ling Yun frowned, seeing that there had been no much movement for a long time, and the so-called magma erupting over there had indeed gradually subsided, so he couldn't help but ask again.

"Magma...... Xiao Shennong thought for a while, and continued to popularize science like an old pedant: "Magma is divided into primary magma and regenerated magma. Primary magma is formed from molten material trapped by the Earth's core. The Earth's core traps molten material and some other materials to form a huge thick molten layer. The composition of these substances is uneven. The primary magma solidified to form the most primitive earth's crust. Ultramafic rocks, mafic rocks, neutral rocks, acidic rocks, alkaline rocks, etc., as well as various types of magma emitted by volcanoes, are all regenerated magma, but the source depth, channel, material composition and degree of differentiation are different. Regenerated magma includes magma mutated from primary magma and relava magma. And all the liquid layers are made up of regenerated magma formed by the mutation of primary magma - formed by changes in temperature, composition, and state of matter. ”

Xiao Shennong's professional interpretation, the two beauties listened to it even more confused.

However, Yan'er Bingxue is smart, and she also likes to get to the bottom of it and understand this strange phenomenon in her own way, so she asked: "Little Shennong, I believe you said that this is a volcano, what did you just say about an active volcano, an extinct volcano, you explain it?" ”

"Yes, what is an active volcano and what is a dominant extinct volcano? I wonder too! Ling Yun was completely confused, perhaps frightened, and followed by the smoke for a while.

"An active volcano is a volcano that is active or periodically eruptive. These volcanoes are in full swing. An extinct volcano is a volcano that has erupted in prehistory but has never been active in history. Such volcanoes have lost their ability to operate. Some volcanoes still retain their intact volcanic form, while others have been weathered and eroded, leaving only fragmentary volcanic remains, all of which have preserved intact volcanic cone morphology and are still volcanically active, or it is not yet possible to conclude that they have lost their volcanic activity. The dormant volcano can be revived, just like the one he encountered just now, the bottom of the valley itself is a crater, but because of the long dormancy, there are already lush trees around, just now, he woke up and became an active volcano. Xiao Shennong explained, while seeing that the two beauties still seemed to understand, he simply said: "Okay, about the volcano, let's talk while walking, anyway, there is no danger now, but those burning trees on the mountain, if they can burn to this side with the help of wind or something, it is not accurate, it is good to leave as soon as possible, let's go!" ”

Xiao Shennong deliberately said the word let's go heavier, and then took the lead to move forward, the two beauties looked back at the smoke of the mountain, nodded, and followed Xiao Shennong all the way forward.

This time, Xiao Shennong suddenly became the focus of the group of three, and in order to satisfy the curiosity of the two beauties, he simply further explained the volcano, especially the process of volcanic eruption, the harm and benefits, etc., which is called a profession. Anyway, the two beauties seem to understand whether they understand or not, and they listen seriously.

In the end, Ling Yun finally understood, and suddenly said: "It turns out that the volcano is really not a monster, it scared us just now!" ”

"Well, I've said enough, volcanoes are volcanoes, they look scary, but they're really not monsters, you can rest assured now!" Xiao Shennong was relieved, this explanation was really difficult. However, the two beauties were finally relieved, and he was relieved.