Les scientifiques ont découvert certains des phénomènes naturels les plus étranges sur Terre, et ils sont absolument époustouflants ! Des vagues bleues lumineuses qui illuminent l'océan la nuit aux rochers qui se déplacent mystérieusement à travers le désert tout seuls, la nature est pleine de surprises. Il y a même des lacs qui peuvent transformer les animaux en pierre et des cascades qui semblent défier la gravité. Certains de ces événements étranges ont des explications scientifiques claires, tandis que d'autres laissent encore les experts perplexes. La Terre regorge de merveilles cachées, et ces découvertes prouvent que notre planète est tout sauf ordinaire. Préparez-vous à être émerveillé par les phénomènes naturels les plus sauvages et incroyables qui soient ! Animation créée par Sympa.
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FunTranscript
00:00Nature can ruin your life with a tsunami, a hurricane, a tornado, a rain storm, and many other destructive events.
00:08But did you know that it also has other, stranger ways of destroying?
00:12Let's take a look at the most unusual natural phenomena.
00:16What would you say about the orange rain?
00:18These are not orange drops falling on you.
00:21No, the whole sky and atmosphere turn dark orange.
00:24Orange clouds pour dirty orange drops on you.
00:28Don't worry, they are not toxic.
00:31But watch your eyes.
00:33Don't let the drops in because they contain particles of sand.
00:37If you want to observe this unusual phenomenon, go to the Canary Islands.
00:42Every year, the sky there turns orange and pours orange-red drops mixed with sand on the ground.
00:48This phenomenon occurs due to the Sahara.
00:50In the desert, strong winds blow millions of tons of dust and sand into the air.
00:56All this mess penetrates the atmosphere and makes the sky orange.
01:00Then, the particles of the Sahara fly to the Canary Islands and fall on people in the form of heavy rain.
01:07The inhabitants of this region feel respiratory problems and a poor vision in these orange conditions.
01:13The airports stop working, all flights are canceled.
01:17In favorable conditions, a storm that carries particles of sand can reach both the Mediterranean and Northern Europe.
01:24As a result, if you suddenly see a red rain, don't be afraid.
01:29This is not the apocalypse.
01:31Warning. This type of rain causes anxiety.
01:35During this phenomenon, you will not see drops of water.
01:38There will be spiders falling from the sky.
01:41People have already been confronted with spider rains in Australia, the United States and the United Kingdom.
01:46These creatures are called lightning web spiders or web weavers.
01:51During strong winds, they climb as high as possible, to the top of plants, bushes and cliffs.
01:58Then, they release a parachute-shaped web and the wind carries them into the sky.
02:03They fly high in the air, meeting birds, cold wind and rough weather.
02:08Not everyone can survive this trip.
02:11Then, when the weather calms down, this small group lands on the ground.
02:15Nobody knows why spiders behave this way.
02:18According to one version, they fly from places where floods can start.
02:23In other words, it is a forced migration.
02:26And because of this migration, spiders often become the first inhabitants of territories destroyed by fires or other natural phenomena.
02:35But don't worry, these creatures are harmless to humans.
02:40They just want to live and multiply.
02:43Although, to be honest, it is difficult to stay calm when thousands of arthropods fall on your head.
02:50Tornadoes are a destructive force.
02:53But look at this, a whirlwind appears during a snowstorm.
02:57It sucks more and more snow.
03:00Now, it's not just a tornado, but a snow whirlwind.
03:05It looks like something terrible and destructive, but don't worry, it's not as scary as it seems.
03:12It's a pretty rare disaster that happened recently in Utah.
03:15The snow whirlwind met a man and his dog on its way.
03:19It looked impressive and dangerous.
03:21Fortunately, nobody was hurt.
03:23This phenomenon occurs when an air vortex rises from the snow on the ground.
03:27If you see a similar vortex next to you, don't panic.
03:31In general, such phenomena are harmless and don't have enough strength to destroy things.
03:37This natural phenomenon is much more dangerous than the tornado.
03:41Just imagine a mountain of ice blocks moving along the roads, carrying everything on its way.
03:47It looks like a tsunami.
03:49But instead of water, there are ice blocks.
03:52The ice tsunami can destroy houses, cars and trees.
03:56It can move on grass, asphalt and sand.
03:59It can jump out of the water like a crazy salmon.
04:01Fortunately, the ice tsunami is not a frequent phenomenon.
04:05It happens when three conditions are met.
04:08A flat coast, floating ice and a strong wind.
04:11The waves and the wind project pieces of broken ice on the shore.
04:15These pieces of ice accumulate in a huge wall.
04:18And then, during the strong winds, this monster of ice begins to move.
04:23Therefore, if you see a lot of ice near the water, stay away from this place as much as possible.
04:30And here we are again with the tornado.
04:33You already know the snow tornadoes.
04:35You have probably seen tornado sequences in a desert when the wind lifts the sand in the air in documentaries.
04:42Tornadoes pass over the surface of the ocean and can create a funnel inside the water.
04:47But there is a phenomenon that is even more fascinating and impressive.
04:51It is a fire tornado.
04:53Surely, few of you have heard of this thing.
04:56It is a very dangerous phenomenon.
04:58Few people have dared to approach the flaming tornado to study it.
05:02But firefighters, on the other hand, often encounter this devastating phenomenon.
05:07A fire tornado is formed during forest fires and sometimes it can appear inside a building on fire.
05:14If you see a big flame and smell a strong wind, be careful.
05:19A flaming funnel can form.
05:22But how does it happen?
05:24Let's first examine the origin of an ordinary tornado.
05:27So we are somewhere in an arid place in the middle of a hot day.
05:31The sun warms the air close to the ground.
05:34These lower layers absorb more energy than the upper layers.
05:38An increase in temperature makes this air less dense and more floating.
05:42It then rises in the sky in the form of long columns.
05:45This rise has a spiral movement.
05:48The water in your bathtub moves in a similar way when it flows through the evacuation hole.
05:53Thus, many of these tornadoes are quite weak and you cannot see them.
05:58But some of them meet strong air currents.
06:01This accelerates their movement, adds energy and increases their surface.
06:05More and more air penetrates this vortex, making it stronger.
06:10When dust and sand penetrate these swirls, you see a tornado.
06:15The fire tornado follows the same pattern, with one difference.
06:19The air below is heated not by the sun, but by the fire.
06:24The fire warms the air.
06:26It rises, turns and drags the fire inside.
06:29Some of these tornadoes can reach up to 120 meters high and 15 meters wide.
06:35It's like a thin tower of pythons on fire, but twice as high.
06:39It's a really devastating and terrifying phenomenon.
06:45The ground is shaking, clouds of birds are flying.
06:48You can hear a loud and deaf rumbling.
06:51The volcano spits out a huge cloud of ash.
06:54The lava flows out of the mouth of the flaming mountain.
06:57Rivers of fire descend, rushing towards you.
07:01You have nowhere to escape.
07:03The fire is getting closer and closer.
07:05And... wait a minute.
07:07This lava is not hot, it is cold.
07:10How is this possible?
07:12You can observe cold lava flows near many volcanoes.
07:17In Indonesia, for example, this phenomenon has recently destroyed entire villages.
07:21Yes, it's not hot.
07:23But it's still dangerous.
07:25Cold lava flows occur when hot lava mixes with ash, sand and rocks in humid weather.
07:32In a way, the volcano spits out thick mud flows.
07:35They cover roads, houses, cars and trees.
07:38Cold lava flows are a destructive phenomenon.
07:41So stay away.
07:43Even if a volcano is very beautiful and you want to take great pictures, don't take any risks.
07:49Okay, let's relax a bit and end our video with something fun.
07:54What would you say about surfing?
07:56But instead of ordinary waves, we have icy waves.
07:59This phenomenon is called the ice wave.
08:02It looks like someone froze a wave while it was forming before it hit the water.
08:07It's a rare event, but you can find it on Mount Washington.
08:11The top of the mountain is covered with fog most of the year.
08:15Low temperatures, humidity and winds form frost.
08:19Then strong winds push this frost aside and thus a wavy shape is formed.
08:25And when there is a wave, you can ski or snowboard inside, like on a surfboard.
08:31But be careful, it's very cold in there.
08:34So wear warm clothes.