Presentation "natural phenomena" presentation for a lesson on the world around on the topic. Presentation "unusual natural phenomena" Amazing natural phenomena presentation
Changes that occur in nature regardless of the will of man are called natural phenomena. This presentation illustrates and describes each of them. This material can be used by both educators and parents if they wish to work with their child at home.
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NATURE OF PHENOMENA Changes that occur in nature independently of the will of man are called natural phenomena. Rain For example, it's snowing Rainbow Wind
Rain is rainfall 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 the drops are large, it is torrential. A very heavy pouring rain is called a downpour. Rain
When raindrops rise and fall in a whirlwind of cold air, freezing more and more, hail forms. And on the ground no longer drops fall, but solid balls. Hail
A rainbow can appear in the sky when it is raining and the sun is shining. It is visible if the sun's rays pass through the raindrops. Rainbow
Dew is a droplet that forms on plants, soil and various terrestrial objects. It appears only when the sky is clear. Dew
Wind is the movement of air. When the air from the ground heats up, it begins to rise upward, and the cold air sinks downward. The wind cannot be seen with the eyes. It can only be felt. The wind can be strong, weak, cold, refreshing, warm. Wind
CLOUDS Clouds look like huge lumps of cotton wool. And what are they actually made of? From billions and billions of small water droplets and ice crystals. They are tiny and light, so they do not fall down, but float in the sky. Clouds come in a wide variety of shapes and sizes. Cumulus clouds look like heaps of piles. Cirrus clouds are sometimes called horse tails. Layered - resemble spreading flat layers. By the type of clouds floating in the sky, you can predict the weather. For example, cumulus clouds foreshadow heavy rain.
Fog is a cloud near the surface of the earth. There is no difference between fog and cloud in the sky. Fog
Hoarfrost are very small crystals that look like 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 frost is solid dew. Frost
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On the subject: methodological developments, presentations and notes
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The polar (northern) lights are one of the most beautiful optical phenomena in the world, which can be observed exclusively in high latitudes, near the poles. Usually auroras are bluish-white, and only in exceptional cases can multicolored auroras be observed. Auroras arise as a result of the bombardment of the upper layers of the atmosphere with charged particles moving towards the Earth along the lines of force of the geomagnetic field from the region of 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 conditions, can take various forms... Especially amazing are ball lightning, which used to be called fireballs. The nature of the occurrence of ball lightning is still not known exactly. Sometimes they were even observed inside houses and airplanes. The behavior of ball lightning has not been studied either. 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 seen during a thunderstorm. Each of us has repeatedly seen the usual, so-called linear lightning. And here ball lightning- a rather rare phenomenon. In nature, about a thousand ordinary line 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 colored in different colors. The blue and red moon is especially unusual. The blue moon is such a rare natural phenomenon that the British even have a saying "once upon a blue moon", which means about the same as ours "after the rain on Thursday." The blue moon appears from ash and burning. For example, when forests were burning in Canada, the moon was blue for a whole week.
"Fire" rain (star rain) In fact, not stars are falling from the sky, but meteorites that enter earthly atmosphere, heat up and burn. In this case, a flash of light occurs, which can be seen at a fairly large distance from the surface of the Earth. Most often, a stellar or meteor shower is a high-intensity meteor shower (up to a thousand meteors per hour). A meteor shower consists of meteors that burn up in the atmosphere and do not reach the earth, and a meteor shower consists of meteors that fall to the ground. Previously, the former were not distinguished from the latter, and both of these phenomena were called "fiery rain". 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 surprise. We all know the reason for the appearance of most mirages - overheated air changes its optical properties, causing light irregularities called mirages. Mirage is a phenomenon long explained by science, but it continues to amaze people. The optical effect is based on a special vertical distribution of air density. Under certain conditions, this leads to the appearance of ghost images at the horizon. However, you instantly forget all these boring explanations when you yourself witness a miracle that is born before your eyes.
Biconvex clouds (Lenticular mammatus) are a rare meteorological phenomenon... This image was taken in Joplin, Missouri. In the early morning, the inhabitants of Joplin could observe these crazy clouds in the sky. The clouds named "lenticular mammatus" are quite rare. The last such appearance was recorded in this area about 30 years ago.
The lights of Saint Elmo are a very beautiful and unusual natural phenomenon. The first witnesses of this phenomenon were sailors observing the lights of St. Elmo on masts and other vertical pointed objects. These are very beautiful glowing balls that appear from a strong electric field, for example, during a thunderstorm, blizzard or violent storm... Sometimes it happened that the Lights of St. Elmo disabled electrical and radio devices.
If you light a fire in the mountains at night under low clouds, your shadow will appear on the clouds and you will have a glowing halo around your head. This phenomenon is called Gloria. Gloria is optical phenomenon that is observed on clouds directly in front of or below the observer, at a point directly opposite to the light source. In China, gloria is called "the light of the Buddha". A colored halo always surrounds the shadow of the observer, which has often been interpreted as the degree of his enlightenment (closeness to Buddha and other deities).
The circular-horizontal arc, which is called a fiery rainbow for its resemblance to flame, was created by ice, not fire. For a fiery rainbow to appear, the Sun must rise above 58 degrees above the horizon, and there must be cirrus clouds in the sky. In addition, the numerous flat, hexagonal ice crystals that make up cirrus clouds must be horizontal in order 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 streak between the already darkened sky and blue sky can be seen everywhere, even off to the side opposite the Sun. The blueness of the sky is due to the reflection of 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 to be reddened. The Belt of Venus is visible anywhere the horizon is clear. The picture shows the belt of Venus, photographed in the Moon Valley, covered with morning fog.
A source
Natural phenomena
Icicles
Snowfall
Natural phenomena
Natural phenomena Dangerous not dangerous One of the most dangerous natural phenomena is a thunderstorm. It is accompanied by lightning, thunder, gusty wind, showers. Lightning is an electrical discharge between a cloud and the ground. Lightning can set fire to a tree, a house, and even kill a person. During a thunderstorm, thunder seems to be the worst thing. But thunder is not dangerous to man, lightning is dangerous. Snowfall is precipitation that falls in the form of snow in winter. On high altitude steam in the snow clouds begins to freeze and turns into small ice crystals. Snowflakes are made from these crystals. Rain is rainfall 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 the drops are large, it is torrential. A very heavy pouring rain is called a downpour.
- After rain, a multi-colored arc may appear in the sky - a rainbow.
- Why does it arise?
Fog is a cloud near the surface of the earth. There is no difference between fog and cloud in the sky.
Ice is frozen water, water in a solid state. When warm, ice turns into water (melts). Hoarfrost are very small crystals that look like tiny snowflakes. Most often, frost falls on cold, clear and quiet nights. It is formed in calm weather and with a light breeze and covers the ground, plants, stones, walls of houses and benches ... Thawed water flows down and drops hanging from the edge, cools and freezes. On the frozen drop, the next one, also freezing, flows, then the third drop, and so on. Gradually, a small ice bump forms - this is how icicles are formed. When raindrops rise and fall in a whirlwind of cold air, freezing more and more, hail forms. And on the ground no longer drops fall, but solid balls. From the Guinness Book of Records:
- The largest hailstone (1 kg) fell in Bangladesh in 1986.
- The largest drops of rain, 10 mm in size, fell in the United States in 1953.
- The longest rain fell in India from August 1960 to July 1961.
Rain is rainfall 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 the drops are large, it is torrential. A very heavy pouring rain is called a downpour. Rain
Hoarfrost are very small crystals that look like 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 frost is solid dew. Frost
Look, the snow on the side of the roof is melting because the sun's rays are heating it to temperatures above freezing. And the dripping water drops at the edge of the roof freeze, because the temperature under the roof is below zero, it's cold. The thawed water flows down and drops down from the edge, cools and freezes. The next drop, which also freezes, flows on the frozen drop, then the third drop, and so on. A small icy bump gradually forms. Another time, in the same weather, these ice surges are even longer - this is how icicles are formed. ICICLES Heat and snow melt Temperature is below freezing, cold, 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 the 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 the rubber is a good insulator and does not conduct electric current. Close the windows on the train and you are safe. Unplug electrical appliances in your home, close all doors, and stay away from 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 water. Fogs are more common in the fall, when the air cools faster than land or water.
