Presentation "natural phenomena" presentation for a lesson on the world around on the topic. Presentation "unusual natural phenomena"

The polar (northern) lights are one of the most beautiful optical phenomena in the world, which can be observed exclusively at high latitudes, not far from the poles. Usually the aurora bluish white and only in exceptional cases can multicolored auroras be observed. auroras arise as a result of the bombardment of the upper atmosphere by charged particles moving towards the Earth along lines of force geomagnetic field from near-Earth space. The northern lights can last from several hours to several days and are striking in their extraordinary beauty.

Any lightning is an electric current, which, depending on the conditions, can take various forms. Particularly amazing are ball lightning, which were previously called fireballs. The nature of the occurrence of ball lightning is still not exactly known. Sometimes they were observed even inside houses and planes. The behavior of ball lightning has also not been studied. Ball lightning can be fiery red, orange or yellow and float in the air for a few seconds until it disappears. Lightning is always accompanied by thunder and a bright flash of light and is most often observed during a thunderstorm. Each of us has repeatedly seen the usual, so-called linear lightning. But ball lightning is a rather rare occurrence. In nature, about a thousand ordinary, linear lightning there are only 2-3 ball.

We are all used to seeing an ordinary moon, but sometimes when the atmosphere is dusty, high humidity, or for other reasons, the moon looks painted in different colors. The blue and red moons are especially unusual. The blue moon is such a rare natural phenomenon that the English even have a saying "once upon a blue moon", which means about the same as ours "after rain on Thursday." The blue moon appears from the ashes and burning. For example, when forests burned in Canada, the moon was blue for a whole week.

"Fiery" rain (star rain) In fact, it is not stars that fall from the sky, but meteorites that enter earth's atmosphere, heat up and burn out. In this case, a flash of light occurs, which is visible at a fairly large distance from the surface of the Earth. Most often, a meteor shower of high intensity (up to a thousand meteors per hour) is called a stellar or meteor shower. A meteor shower consists of meteors that burn up in the atmosphere and do not reach the ground, and a meteor shower consists of meteorites that fall to the ground. Previously, they did not distinguish the first from the second, and both of these phenomena were called "rain of fire." Interesting fact: every year from fragments of meteorites and cosmic dust, the mass of the Earth increases by an average of 5 million tons.

Despite their prevalence, mirages always evoke an almost mystical sense of wonder. We all know the reason for the appearance of most mirages - superheated air changes its optical properties, causing light inhomogeneities called mirages. Mirage is a phenomenon long explained by science, but continues to amaze the imagination of people. The optical effect is based on a special distribution of air density along the vertical. Under certain conditions, this leads to the appearance of virtual images near the horizon. However, you instantly forget all these boring explanations when you yourself become a witness of a miracle that is born before your eyes.

Lenticular mammatus is a rare meteorological phenomenon. This photo was taken in Joplin, Missouri. Early in the morning, the people of Joplin could watch these crazy clouds in the sky. Clouds, called "lenticular mammatus", are quite rare. The last such occurrence was recorded in this area about 30 years ago.

St. Elmo's fires are a very beautiful and unusual natural phenomenon. The first witnesses of this phenomenon were sailors who observed the fires of St. Elmo on masts and other vertical pointed objects. These are very beautiful luminous balls that appear from a lot of tension. electric field such as during a thunderstorm, snowstorm, or severe storm. Sometimes it happened that the Fires of St. Elmo disabled electrical and radio devices.

If you kindle a fire in the mountains at night under low clouds, your shadow will appear on the clouds and around your head you will have a luminous halo. This phenomenon is called Gloria. Gloria is optical phenomenon, which is observed on clouds located directly in front of the observer or below him, at a point directly opposite the light source. In China, gloria is called the "light of the Buddha." A colored halo always surrounds the shadow of the observer, which was often interpreted as the degree of his enlightenment (closeness to the Buddha and other deities).
The circumhorizontal arc, which is called a fiery rainbow because of its resemblance to a flame, was created by ice, not fire. For a fiery rainbow to occur, the Sun must rise above 58 degrees above the horizon and there must be cirrus clouds in the sky. In addition, the many flat, hexagonal ice crystals that make up cirrus clouds must be arranged horizontally to refract sunlight like one giant prism. Therefore, a fiery rainbow can be seen very rarely, but such a phenomenon looks very bewitching in the sky.
At dusk, just before sunrise or just after sunset, the sky above the horizon is partly colorless and partly pinkish. This phenomenon is called the belt of Venus. A colorless strip between the already darkened sky and blue sky can be seen everywhere, even away from the Sun. The blueness of the sky is explained by the reflection sunlight in the atmosphere. The phenomenon of the belt of Venus is explained by the reflection in the atmosphere of the light of the setting (or rising) Sun, which appears reddened. The Belt of Venus is visible anywhere as long as the horizon is clear. In the picture you see the belt of Venus, photographed in the Valley of the Moon, covered in morning fog.

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Hello, Dear friends today I would like to introduce you to the extraordinary miracles that our planet has been surprising us with for thousands of years.

What planet do we all live on? (Earth). Beautiful planet! I invite everyone present to see a photo of the Earth.

Slides No. 2-11 - views of the Earth from space (automatically, to the song "Earthlings" "Grass near the house").

Very beautiful, really! Our planet is full of surprises, we call them natural phenomena We see many of them every day. I ask you to solve riddles about them.

Runs through the grove -

Washes and rinses

Ran along the meadow -

The shepherdess bathed.

(Cloud)

No one sees me, but everyone hears, and everyone can see my companion, but no one hears.

(Thunder and lightning)

And not snow, and not ice, but silver will remove the trees.

(Frost)

There is a commotion in the yard: peas are falling from the sky.

Inna ate six peas, she now has a sore throat.

(grad)

Milk floated over the river, nothing was visible.

Dissolved milk - it became visible far away.

(Fog)

For a minute, a multi-colored miracle bridge has grown into the ground.

The miracle master made a high bridge without a railing.

(Rainbow)

They fly without wings, they run without legs, they swim without a sail.

(Clouds)

He flies down the cliff

breaks on stones.

He roars louder than the beast

and turns into foam.

(Waterfall)

Without a language, no one sees it, but everyone hears it.

(Echo)

The white dog looks into the doorway.

(Snowdrift)

Near the village the horse is cheerful.

(Snowstorm, blizzard)

(Remaining slides by click).

Slide #12Mirages

Despite their prevalence, mirages always evoke an almost sense of surprise.Mirage (fr. mirage - lit. visibility) - an optical phenomenon in the atmosphere: a combination of light streams at the border of different layers of air: hot and cooler. For an observer, this phenomenon consists in the fact that, along with a really visible distant object (for example, a section of the sky), its reflection in the air is also visible.

Slide #13Halo

Usually halos occur at high humidity or severe frost - before the halo was considered a phenomenon from above, and people expected something unusual.

The halo usually appears around the Sun and Moon, sometimes around other powerful light sources such as street lights. The halo is caused by ice crystals in clouds at an altitude of 5-10 km. The appearance of the halo depends on the shape and location of the crystals. Sometimes the halo looks like a rainbow.

Slide #14moon rainbow

We are almost used to the usual rainbow. A lunar rainbow is much rarer than a rainbow seen in daylight. A lunar rainbow can only appear in places with high humidity and only when the moon is almost full.

The night rainbow (or lunar) is the light that is reflected from the surface of the moon. A lunar rainbow is a very rare natural phenomenon. If observed with the naked eye, it may appear colorless, due to which it is often referred to as "white". There are several places in the world where the phenomenon of night rainbows is quite often repeated.Pictured is a moonlit rainbow at Cumberland Falls in Kentucky.

Slide #15Belt of Venus

An interesting optical phenomenon that occurs when the air is dusty is an unusual "belt" between the sky and the horizon.

Slide #16pearl clouds

Unusually high clouds (about 10-12 km), becoming visible at sunset.

Slide #17Northern lights

(video #1 Northern Lights)

Appears when energetically charged particles collide with the Earth's atmosphere.

Slide #18-19colored moon

Colored moon. This is how our satellite sometimes looks due to the presence of smoke, dust in the atmosphere, and also during eclipses.

When the atmosphere is dusty, high humidity, or for other reasons, the Moon sometimes looks colored. The red moon is especially unusual.A blue moon is an incomparably rarer phenomenon than a red one.

Slide #20biconvex clouds

An extremely rare phenomenon that appears mainly before a hurricane. Opened just 30 years ago.

slide number 21Saint Elmo's fire

A fairly common phenomenon caused by increased electric field strength before a thunderstorm, during a thunderstorm, and immediately afterand in winter during blizzards.The first witnesses of this phenomenon were sailors who observed the fires of St. Elmo on masts and other vertical pointed objects.

St. Elmo's fires - an electric discharge in the form of luminous beams that occurs at the sharp ends of tall objects (towers, masts, lonely standing trees, sharp tops of rocks, etc.).

The phenomenon was named after Saint Elmo, the patron saint of sailors. For sailors, the appearance of lights promised hope for success, and in times of danger - for salvation.

slide number 22light poles .

The nature of these phenomena is similar to the conditions that cause the appearance of a halo.

slide number 23diamond dust

Frozen water droplets that scatter the light of the sun.

slide number 24Fire rainbow.

Occurs when the sun's rays pass through high clouds.

Video #2 Tornado Fire whirlwinds

Beautiful, dangerous and rare natural phenomenon. They appear at a certain combination of air direction and temperature. In this case, the flame can rise up to tens of meters, thus forming a semblance of a fiery tornado.

slide number 25green beam .

An extremely rare phenomenon that occurs at sunset or sunrise.

Green beam - a flash of green light at the moment the solar disk disappears behind the horizon (usually the sea) or appears from behind the horizon.

In order to observe the green beam, three conditions are necessary: ​​an open horizon (in the steppe, tundra, mountains or at sea in the absence of waves), clean air and the side of the horizon free from clouds, where the sunset or sunrise occurs. Observation with the naked eye is quite rare. Using a spyglass, a telescope, binoculars, and pointing the device at sunrise in advance, you can see it on almost any day with suitable weather. You can watch no more than a few seconds - dangerous! At sunset, its bright light does not allow the use of optics at all.

The normal duration of the green beam is only a few seconds.

slide number 26crawling stones

This amazing action that takes place in Death Valley has been disturbing the minds of scientists who are trying to write a description of natural phenomena for several decades. Huge boulders crawl by themselves along the bottom of the lake. At the same time, no one touches them, but they still crawl. No one has ever seen exactly how they move. At the same time, they stubbornly move, as if alive, sometimes turning over on their side, while leaving behind deep traces that stretch for several meters. Periodically, the stones write out such complex and unusual lines that they turn over, making somersaults in the process of movement.

Video No. 3 (7 unusual natural phenomena).

Our fun activity has come to an end. I hope you learned a lot today about the wonders of our planet.

Rain is precipitation that falls in the form of water droplets. The water droplets in the clouds become too heavy and begin to fall to the ground. If the drops are small, it is drizzling, and if large, it is torrential. Very heavy heavy rain is called a downpour. Rain

Hoarfrost is very small crystals, similar to tiny snowflakes. Most often, frost falls on cold, clear and quiet nights. It forms in calm weather and with a light breeze and covers the ground, plants, stones, walls of houses and benches ... They say that hoarfrost is hard dew. Frost

Look, the snow on the slope of the roof is melting, because the sun's rays heat it up to a temperature above zero. And the dripping drops of water at the edge of the roof freeze, because under the roof the temperature is below zero, it's cold. The thawed water drains and hangs in drops from the edge, cools and freezes. The next, also freezing, flows onto the frozen drop, then the third drop, and so on. Gradually, a small ice tubercle forms. At another time, in the same weather, these ice flows are still lengthening - this is how icicles are formed. Icicles Heat and melting snow The temperature is below zero, it's cold, the drops freeze.

3. Read and title the text. Sometimes lightning strikes people. It ends tragically. How to protect yourself from a lightning strike? If a thunderstorm caught you in the forest, do not go out to the edge, do not come close to tall trees. If you are sitting in a boat on a lake, then rather row to the shore or lie down on the bottom of the boat. Close all windows in the car. The wheels of the car are rubber, and rubber is a good insulator and does not conduct electricity. On the train, close the windows and you are safe. In the house, turn off electrical appliances, close all doors and do not go near the windows.

8. Underline the words that are logically stressed. The wind cannot be seen with the eyes. It can only be felt. The wind is strong, weak, cold, refreshing, warm. Over the sea, fog occurs when the air is warmer than the water. Fogs are more common in autumn, when the air cools faster than the ground or water.

Presentation on the topic "Natural phenomena"

Natural Phenomena Seasons Test Yourself CONTENTS

The sun warms, the snow melts, streams run, leaves bloom, grass turns green, Insects appear, return migratory birds. The days are getting longer. Sleeping animals in winter wake up and bask in the warm spring sun. The birds are starting to nest. SPRING

Warmth, green plants, flowers, fruits and berries ripen, butterflies fly and beetles crawl. The days are getting long. The water in the river is warm and you can already swim. The sun is very hot. SUMMER

The days are short and rainy, the nights are long and cold. Leaves fall from trees and shrubs, grass fades, insects disappear, migratory birds fly away to hot countries. People are harvesting. AUTUMN

When does it happen? The low sun shines, but does not warm. All the trees are covered with silver sparkling in the cold rays of the star. Children in warm coats and fur hats ride down a high mountain. summer m 2) autumn y; 3) in winter; 4) in the spring. The gentle sun shines brighter and warmer. Primroses bloom on thawed patches. forest animals often leave their homes in search of food. Very soon hazel and willow will dissolve their catkins. 1) summer m; 2) autumn yu; 3) in winter; 4) in the spring.

When does it happen? The biggest holidays have arrived. The hot sun bakes. In a forest clearing, fragrant strawberries are hiding under the leaves. The whole forest is filled with bird trills. Daisies sway in the fields with yellow eyes with white cilia. in winter; 2) in spring; 3) summer m; 4) autumn y. The days are getting shorter. The sun shines less often. The trees drop their bright colors into the puddles. Cold winds blow more often. A drizzle keeps the kids at home. Passers-by on the street turn up their coat collars. Sometimes the rain turns into sleet. 1) in winter; 2) in spring; 3)

slide 2

Aurora Borealis, or Northern Lights

The Northern Lights are one of the most enchanting and inspiring natural phenomena,

which occur only around the Arctic (near the North Pole) and the Antarctic ( South Pole) Circle. The northern lights are caused by a fusion of charged particles and atoms that are only typical of these two regions on Earth. One of the best places to watch this natural phenomenon is in Lapland, northern Finland.

slide 3

There you can meet rich wildlife and completely uninhabited areas, while Better conditions to observe the phenomenon are provided with a perfectly clear night sky, with no urban night lighting, lack of telecommunications signals, or air pollution. The Aurora Borealis is truly a romantic wonder because it appears at a very high altitude and is like blue, yellow, green, reddish and purple rivers in the sky that are dotted with countless bright stars.

slide 4

Tubular clouds of an unusual shape

Tubular clouds are rather unusual clouds that can immerse you in a wonderful feeling of relaxation and inspiration, in a world of dreams and illusions. This feeling is caused by the unique shape of these clouds, which are like giant chimneys whose colors change from white to gray and other darker hues.

slide 5

These colors depend on the thickness of the cloud. This natural phenomenon can be seen in most places where thunderstorms begin to form. These beautiful clouds usually look like groups of balls and seeing their smooth structures at sunset is definitely a real rarity.

slide 6

Monarch butterfly migration

Monarch butterflies are one of the most beautiful creatures that evoke feelings of admiration and love. These butterflies show a vibrant mix of orange and black and are often found in the US, Mexico and Melanesia (northeast of Australia).

Slide 7

However, when it comes to observing monarchs, the most the best place is in the US during their Monarch migration from Canada to Mexico and back. For example, while walking in the parks of California, you can witness numerous trees whose branches and leaves are shaded in orange and black because the trees are dotted with monarch butterflies.

Slide 8

Penitentes

Penitentes are strange formations of ice and snow that are tall pillars ranging in height from a few inches to over 2 meters. They are common in the highest regions of the central Andes between Chile and Argentina, where the height is over 4,000 meters.

Slide 10

Moving rocks in Death Valley

This natural phenomenon is observed in Racetrack Playa, national park Death Valley, California. The mountainous landscape there alternates with alluvial

valleys, while Racetrack Playa is one of the most picturesque and mystical dry lakes. So it was named because of the numerous moving stones. You can actually clearly distinguish their footprints on the desert surface.

slide 11

The journeys of these "Sailing Stones" are a great geological mystery and a phenomenon believed to be created by severe winds, the speed of the stones, a thin layer of sand, and many other factors. Visiting Racetrack Playa is a real treat, where you will be surrounded by dramatic mountain peaks dominated only by shapeless white clouds.

slide 12

super clouds

Supercell clouds are another striking natural phenomenon.

Supercells - Thunderclouds that can appear anywhere there is a presence humid climate and frequent thunderstorms.

Some of the world's most famous places to watch Supercells are the central states of the US, which are part of Tornado Alley.

slide 13

For example, the plains in Nebraska and the Dakotas are enticing places to watch this natural phenomenon. You will be captivated by the drastic natural change of daylight as you watch the Supercells at sunset.

Slide 14

Firestorm

The fire tornado is probably the most beautiful and graceful phenomenon associated with fire, which

created by the vertical forces of the vortex. Except for him amazing beauty and magically bright forms, the fiery whirlwind is also very dangerous and destructive.

slide 15

It occurs in areas where tornadoes originate from fire or burning woods, while wind speeds often exceed 100 miles per hour. Such a phenomenon is very rare, and the sight of it is as magnificent as it is tragic. Fire tornadoes are real attractions for extreme enthusiasts and photographers.

slide 16

sandstorms

Sandstorms are quite a typical natural phenomenon for some areas on Earth. They are

created by strong storms and winds that move through dusty areas with a dry climate. Thus, sand particles are distributed within the atmosphere, while strong winds pick up and accelerate their movement. For example, the Sahara North Africa and deserts in Asia are the most famous places where sandstorms begin.

Slide 17

This beautiful phenomenon is really an amazing phenomenon, therefore a completely different world is being created. The most ferocious sandstorms are quite dangerous because they are tiny

sand particles can penetrate almost everywhere. There are also many places to watch this phenomenon - the Great Pyramids in Egypt offer probably the most inspiring scenery imaginable.

Slide 18

Rainbow - Magic bridge between heaven and earth

Everyone in their life at least once, but saw the Rainbow, and remembers the colorful emotions that this causes

natural natural phenomenon. Our world is endowed with a wide variety of rainbows, from small arcs with thin layers of color to giant arcs that can span over hundreds of kilometers.

Slide 19

There are rainbows with a double arch - this is a majestic and inspiring optical illusion. Rainbows are caused by the fusion of tiny water particles and the sun's rays. For example, evaporation from a rainstorm can

provide a rainbow if the direction of the sun's rays is optimal. Most of the most significant places to observe such a phenomenon include water basins- rivers, lakes and other bodies of water.

Slide 20

TaosHum, or Taos Hum

The Taos Noise is a more acoustic phenomenon that is caused by an unknown source.

Perhaps the winds that pass through a certain mountain landscape or something else -

there are no definite answers. People who have heard Taos Hum are also few in number. Definitely, this is one of the strangest and mystical phenomena of nature.

slide 21

It was named after the city of Taos in northern New Mexico, USA. This is the most enticing place to hear this phenomenon. There is a feeling that an invisible volcanic eruption is accompanied by low-frequency noise.

Just imagine the atmosphere at sunset when you hear this sound, while you are surrounded by numerous mountain peaks and storm clouds.

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