CIRA International making a mountain out of little; Mountain pegs stop earthquakes?

In answer to the video "Mountains Hold Down the Earth Like Tent Pegs? - Scientific Miracles of the Quran Ep. 3"

It has already been established in previous videos how the Quran draws a parallel between the hospitability of our world for life, and a comfortable and well secured tent. 

Then the Quran talks about the mountains as pegs 78:6-7,79:32. Pegs provide stability to the sheltering tent as implied in the imagery. Without these pegs it would fall or be blown away by storm. The Quran calls the mountains pegs, in the context of drawing a picture of creation. These huge, stabilizing, sheltering objects are part of the system that allows mankind to develop and thrive physically. Just as by their massive presence, they allow human life to physically thrive, they do have their equivalent, on an even more massive scale in the metaphysical realm to allow humans to thrive, this time, spiritually. The revelation, should it descend in our material world, it would instantly shatter the most massive of those mountains by virtue of its spiritual weight

13:31,59:21"Had We sent down this Quran on a mountain, you would certainly have seen it falling down, splitting asunder because of the fear of Allah, and We set forth these parables to men that they may reflect".

In the darkest times of his prophetic mission, towards the beginning, the prophet Muhammad would often retreat in fear and would thus be pulled out from reclusion by revelation. He would be told to rise and through acts of devotion, to prepare himself spiritualy to be able to bear what is about to come down on him from on high

73:5"Surely We will make to light upon you a weighty Word".

The Quran often uses the image of vastness, greatness found in nature and more particularly the mountains when it wants to express the massive importance of a thing, more specifically of this Revelation 14:46,10:22-23,42:33. This kind of imagery is pictured in many places, and is meant at contrasting those whose hearts are more inert and harder to penetrate by divine guidance, than a massive mountain would be. 

This literary style also serves the purpose of picturing the importance of Revelation as already pointed earlier; it takes a special kind of creature with a special kind of internal disposition to be able to bear it, in addition to bearing the consequences of having to communicate it. The Israelites begged Moses to be their intermediary with God instead of receiving revelation themselves. The experience at Horeb was so violent and traumatic that they did not want God to speak directly to them anymore, fearing they would die.  The word used in sura sharh to describe what kind of burden Muhammad was relieved from through God's expansion of his chest is wizr, used for something nearly unbearable

94:1-3"Have We not expanded for you your breast, And taken off from you your burden, Which pressed heavily upon your back".

What is rendered "pressed heavily" is anqada which actually is used when something is about to break. The prophet Moses at the beginning of his call and prior to his confrontation with Pharao requested from God the same spiritual relief and strengthening 20:25. We see here how the Quran consistently keeps its notions, although scattered all throughout the divine writings, connecting them together.

Back to the mountains as a physical object and the way they affect nature around them. 

The Arabs were familiar with mountains, considering the landscape around Mecca and Medina. The mountain was a refuge when the earth shook as it absorbs a great deal of the shock. A person would naturally seek refuge by or behind huge, stable and immovable objects, such as mountains, when the earth shook

16:15,81"And Allah has made for you of what He has created shelters, and He has given you in the mountains places of retreat".

As a basic law of physics, even the tiniest piece of rock would dissipate the force somewhat of an earthquake, but it is so minuscule, it would make absolutely no difference to a major earthquake. Shallow earthquakes however do not travel for long distances because the waves are absorbed by loose earth materials. Mountains are the most significant natural earthquake shock absorbers both because of their size and the bedrock underneath. And when those mountains over a significant period of time, become ranges, earthquake force is dissipated even more. The mechanism of mountain formation itself is a stabilizing factor. When 2 earth surfaces collide and the earth's crust bends upward to form a mountain, the energy from the collision is diffused. If the mountains were not formed then the tension would be much higher, continuous, and devastating with no mechanism by which to diffuse the energy from plate collisions. Interestingly, a hadith seems to refer to that situation 

"When Allah created the earth, it started shaking/oscillating. So He created the mountains, and said to them: ‘Upon it’ so it began to settle. The angels were amazed at the strength of the mountains.."

The Quran in the context of creation alludes to that mechanism too

21:31,50:7,31:10"He set in/FEE the earth anchors/RAWASI".

FEE primarily means IN or inside. RAWASI linguistically means Anchors. The main word for mountain is jabal, not rawasi (the Quran also uses tur or tawd 26:63 for a very large mountain as seen from its use in preislamic poetry). So although rawasi can sometimes be used for mountains, it does not mean it means mountains in every context. These rawasi fee al ard/anchors in the earth, could be anything including the forces that create the mountains and prevent disasters when two earth plates collide. RAWASI then fits perfectly because the anchors themselves created the mountains and anchored the land plate and the mountain as well. As stated in 

41:10"He made in it RAWASI from above it". 

The Arabic is difficult to translate and clearly implies an entity from within the earth towering above it.

To corroborate further, 

88:19"and the mountains, how they are fixed/erected". 

The word nusibat carries both the meanings of raised up and fixed, which correctly describes mountains. 78:7 similarly says

"WALJIBAL ARSAHA/and the mountains, He anchored them".

The Quran in places describes the earth as made to receive these rawasi in it 16:15. Alqa/to receive fits the concept of rawasi fee al ard, as it is a phenomenon which God made to exist within the earth.

In the Arabian peninsula, the mountains are among the most ancient and their surfaces are dense and solid, immune to land-sliding in general. In places like the Himalayas, damage is done primarily because of lightly-packed soil which results in land-slides. 

The Quran is simply saying, the mountains provide a stabilizing factor in preventing the land from shaking, so as to take men with them. It doesnt say the mountains stabilize the earth as a whole and completely prevent earthquakes. 

Such an assertion predicates that the Arabs, or whomever this youtuber supposes wrote the Quran, believed there was no such thing as earthquakes, or that they never experienced them because the mountains allegedly prevent such phenomena. This of course is absurd considering because Arabs did experience earthquakes. The Hijaz is part of the Great Rift Valley. What the Arabs believed, and what the law of physics are clear on, is that mountains act as a stabilizing force against the shocks of earthquakes, absorbing a great deal of its energy.

So the protection is not absolute. Similarly the sky as a canopy, as per the imagery of the hospitable tent, does not always provide protection when calamities fall from above or bad weather comes, some inhospitable areas of the earth do not conform to the imagery of a carpet spread for honoring guests inside the comfortable tent. 

These various imageries point out the general benefits man gets from these phenomena, without giving an absolute description of their functions. There are many such usages in the Quran, for example garments are said to have the purpose of protection from heat 16:81 and this is because the verse's primary addressees were desert dwellers, who also experienced the harsh cold of the night and used these garments for warmth. 

As always the Quran, being a book of guidance, whenever it points to a natural phenomenon it isnt solely on account of its material function. It is always trying to make the reader and listener ponder upon these entities and find a link between them and the spiritual realm. Besides their protective and sheltering nature, mountains also serve as a guidance to the traveller, just like Allah sent His prophets to guide mankind towards the ultimate destination, protecting them from the calamities of a mighty Day

21:31"And We have made great mountains in the earth lest it might be convulsed with them, and We have made in it wide ways that they may follow a right direction". 

When the Quran refers to the power unleashed on the Day of Judgement, it states these mountains, which are in human psyche the last natural objects one would think could be uprooted, the ultimate shelter one can find, yet it says that through a single blow they will all be thrown from their roots 69:14,20:105, tossed in the sky 52:10, floating like clouds 27:88, ripped appart like carded wool 70:9,101:5 shattered and scattered 73:14,77:10,56:5. As an interesting linguistic observation here, testimony once more to the Quran's surgical use of words and the way in which its interconnects its statements at different places with great consistency, in these places describing the state of the mountains during the cataclysm of the last day, when it compares them to soft wool beaten and tossed around in the air, it isnt any kind of wool that is meant. It is the type of wool as said in 70:9 above, that is dyed in different colors and this is because elsewhere, in a completely different context, when attracting the reader's attention to the variety in God's creation, it speaks of mountains existing in many different types and colors 35:27. One must keep in mind that the Quran is composed of revelations instantly recited then put to writing and memorized, with several witnesses present everytime, making it impossible for the prophet to retract a statement, go back on it and re-edit any of its contents. And yet, despite it being revealed in public in so many different contexts and situations, over a long period of 23 years, it still manages to connect even the most apparently insignificant details throughout its passages.

In parallel to the obliteration of the mountains, the earth's surface will be smoothed and levelled 18:8,47,20:105-7 therefore striping men from any place of concealment and shelter from the judgement. This day, as is here described through the stripping away of all places of refuge, even the most massive, is a day that will catch men no matter where they hide in the heavens or earth to bring them to account 29:22, and leave men standing in ranks 18:48"as We created you at first" with only their deeds to shield them from the punishement of that Day.