"Why is it pumice again?"

Mo Lan immediately squatted down, picked up the pumice stone on the ground and looked back and forth in his hand.

"Mo Lan, what kind of stone is this? Do you recognize it? ”

Han Che and Yuga Hanying all came over, asking with doubts on their faces.

"This porous stone is called pumice, which is a mineral formed after the magma cools after the volcanic eruption, the main component is silica, the texture is soft, the specific gravity is small, and it can float on the surface of the water, so we call it pumice. The presence of such a thing means that there is a volcano here, and it has erupted before. ”

Mo Lan had already put the small emotions just now behind her, and explained to the three of them with a solemn face at this moment.

"Volcano? What is a volcano? ”

Hanying was the first to ask, his face full of astonishment.

Mo Lan glanced at him and explained, "A volcano is a geological structure with a special morphology, formed by the ejection of high-temperature magma and its related gases and debris from the crust of a planet in a magma reservoir beneath the earth's surface. ”

When the three of them heard this, they were all at a loss.

Mo Lan knew that the term she said was incomprehensible to the orcs of the Savage Continent, so she simply squatted on the ground and explained it simply and clearly while drawing.

"Let's put it this way, pumice stone only appears because of volcanic eruptions, and volcanic eruptions are formed by the eruption of magma underground. Magma is a hot, viscous melt that erupts from a crater, and when magma erupts, it slowly cools down and forms pumice and other lava materials. ”

Under Mo Lan's detailed explanation, the three of them finally understood the formation principle of the volcano.

Han Che pointed to the bottom of the conical volcano on the ground and frowned and asked, "So, magma is generated underground, and for some reason, it rushes out of the ground through the crater, and those spewed magma later cooled down to form these pumice stones?" But why is there magma underground? Where does this magma come from? ”

Mo Lan glanced at Han Che, once again amazed by his comprehension and analytical ability. This person is worthy of being the patriarch, and he really can't take on this great responsibility without the intelligence of others.

This also proves that his vision is correct, Han Che is indeed a stable and reliable person. The more I look at Han Che in my heart, the more pleasing it becomes, and by the way, even the previous resentment has dissipated without a trace.

Again, she explained, "Magma is liquid rock. The surface rock has pressure on the underground, and when the pressure is high, the temperature is high, and when the temperature is ridiculously high, the underground rock is no longer solid, but melts into liquid magma. ”

"What is stress? What are Solid and Liquid? ”

After Mo Lan finished speaking, Han Che immediately asked, and Han Ying and one of the two also nodded in agreement, facing the three curious babies, Mo Lan had to say all the knowledge about stress and volcanoes that she had learned in school.

"Pressure refers to the force that occurs on the contact surface of two objects, or the perpendicular force of a gas on the surface of a solid and a liquid, or the perpendicular force of a liquid on a solid surface."

Speaking of this, Mo Lan stretched out his palm and pressed hard to the ground, explaining to the three of them: "You see, when my palm is pressed against the ground, the ground will be subject to the pressure exerted by my palm, and this is the simplest explanation of pressure. ”

Han Che and Han Ying Yuga glanced at each other and nodded, which is easier to understand.

Mo Lan then continued: "As for the solid liquid state, it is a state of matter existence, for example, stones and trees are solid, and they exist in solid form. Whereas, water and magma are both liquids and exist in liquid form. ”

"The reason why volcanoes erupt is because the magma contains a large amount of volatiles, coupled with the confining pressure of the overlying rock layer, so that these volatiles are dissolved in the magma and cannot escape, when the magma rises close to the surface, the pressure decreases, and the volatiles are released sharply, so a volcanic eruption is formed."

"Volcanoes, which are divided into active, extinct and dormant volcanoes, are the window to the hot heart of the earth and the most explosive force on earth, erupting with the ability to eject a variety of materials. Volcanic activity is often accompanied by earthquakes, and can cause hazards such as volcanic mudslides and lava flows, which is a powerful natural phenomenon. ”

"The presence of pumice in this warm ground indicates that there must have been a crater in the vicinity and that there had been a volcanic eruption. Perhaps because of this, the soil here is different from other places, and because of the original magma layer, the warm ground was formed. ”

After Mo Lan finished speaking, she breathed a long sigh of relief, and suddenly remembered something: "By the way, last time Xilu came to me, she also brought me a pumice stone, saying that it was a gadget that Soria brought back to her from outside!" I was amazed! I wanted to ask someone, but Soria went yak hunting with you, and then forgot about it. ”

"Soria?" Han Che paused slightly when he heard this, and then ordered: "Yan, go and call Soria over, and let Mo Lan ask well!" ”

The orc standing on the side nodded Yan and immediately turned around to call someone.

Han Che turned his head to look at Mo Lan, and his face suddenly became a little solemn: "Mo Lan, what did you mean by the active volcano just now?" Does that mean volcanoes will erupt again? ”

Mo Lan's eyes once again showed a touch of appreciation, and she nodded to Han Che and said, "Yes!" The reason I asked Soria was to determine the location of the crater. You have to go and make sure that the volcano doesn't erupt again, otherwise if the volcano erupts again, the nearby animals, plants, and people will all be swallowed up by magma! ”

After Mo Lan finished speaking, he looked around at the orcs around him, and finally fixed his gaze on Han Che: "Let me repeat again, the temperature of magma is as high as more than a thousand degrees, and it can melt everything on the ground into nothingness in an instant!" So, you have to make sure that the volcano doesn't erupt anymore, otherwise, this place can't stay any longer! ”

When everyone heard this, their scalps were numb.

Of course, they don't understand what the so-called more than 1,000 degrees is, but melting everything into nothingness, this sentence, can make them feel an unprecedented danger!

When Han Che heard this, his face also became extremely solemn.

If it is really as Mo Lan said, then it is really hard to say whether this warm land can be lived!

"Patriarch, Soria is here!"

At this moment, Yan brought a stout orc over and reported to Han Cheyu.

"Soria, come here, the Holy Witch has something to ask you!"

Han Che stood up and immediately commanded.

The stout orc Soria scratched his head innocently, walked up to Mo Lan and said, "Holy Witch, what do you have to ask me?" ”

Mo Lan also stood up, first looked at Soria, then picked up a pumice stone to show Soria, and asked, "I heard that you have picked up this kind of stone?" Can you tell me where you picked up this stone? ”

Soria looked at the pumice stone in Mo Lan's hand, and immediately said suddenly: "Yes, Holy Witch, I went out hunting with Vic's team a few days ago and found it in the Ural Highlands. ”

"The Ural Highlands? Where is it? ”

When Mo Lan heard this, he immediately asked.

Without waiting for Zoria to speak, Han Che took the lead in explaining: "The Ural Highlands are in the northwest of the territory of the Cold Wolf Clan, about two thousand arrows. There is relatively little snow cover and wild moose are often seen. ”

When Mo Lan heard this, she thought for a while and said, "Let's go!" Take me to see it! ”

If you don't find out what happened to the volcano, it's futile to do anything! If there is an active volcano here, won't they all have to finish playing?

This must be done immediately!