How to create a rainbow at home - presentation. Amazing nearby. rainbow at home How to make a rainbow using a mirror

Antipenko Sergey

Purpose of the study: to determine what is the relationship between rain, sun and the appearance of a rainbow, and whether it is possible to get a rainbow at home.

Download:

Preview:

To use the preview of presentations, create yourself a Google account (account) and log into it: https://accounts.google.com

Slide captions:

RESEARCH WORK "HOW TO CREATE R A D U G U IN HOME CONDITIONS?"

Objective of the study: to determine what is the relationship between rain, sun and the appearance of a rainbow, whether it is possible to get a rainbow at home. Object of research: natural phenomenon R A D U G A. Subject of research: the origin of the rainbow. Research problem: how to create a rainbow at home; how a rainbow appears and why it is multicolored; how to create white from colored components.

RESEARCH OBJECTIVES How does a line appear? When does a rainbow appear? Can you get a rainbow at home? How to get white from colored components?

HYPOTHESES Suppose that a row appears in sunny weather during rain, when the sun's rays pass through the raindrops. Suppose you can get a rainbow by replacing the sun's rays with an artificial light source.

BASIC METHODS Literature study. Observation. Experiment.

"Every hunter wants to know where the pheasant is sitting." "How once Jean the bell ringer knocked down a lantern with his head."

Every schoolchild can repeat Newton's experience. I repeated this experience, but with an artificial light source. We observed the decomposition of light into a spectrum as it passes through a prism at home, using a prism and a projector. To do this, we “caught” a white ray with a prism and got an image of a rainbow on the wall. The light that seemed white played on the wall with all the colors of the rainbow. This is how we penetrated into the mystery of the ray, into which the famous English scientist penetrated more than 300 years ago.

HOW DOES R A D U G A APPEAR? When it rains, there is a huge amount of water droplets in the air. Each droplet plays the role of a tiny prism, and since there are a lot of them, a rainbow is obtained in half the sky. That's who it turns out to be building a multi-colored gate in the sky quickly and beautifully! Sun ray and raindrops. All rainbows are sunlight that passes through raindrops like prisms, refracts and reflects on the opposite side of the sky.

WHEN DOES R A D U G A APPEAR? Radiation appears only when the sun peeped out from behind the clouds and only in the side opposite to the sun. Radiation occurs when the sun illuminates the curtain of rain. R a d u g y can be observed only in the early morning or late afternoon.

IS THERE A R A D U G A WITHOUT RAIN? Such a miracle also happens.

EXPERIENCE “CREATING RADUG AND IN HOME CONDITIONS” To make sure that the white color consists of seven colors and the rainbow can be obtained artificially, we conducted an experiment. We needed: a flashlight, a water tank, a flat mirror, white cardboard and water. Experiment: The tray was filled with water. A tilted mirror was placed. We directed the light of the flashlight to the part of the mirror submerged in the water. To catch the reflected (or refracted) rays, the cardboard was placed in front of the mirror.

AS A RESULT ON THE CARDBOARD ARE THE REFLECTION OF ALL THE COLORS OF THE RAINBOW, WE COULD GET R A D U G U IN THE "HOME" CONDITIONS. Conclusion: the beam of light reflected by the mirror at the exit from the water is refracted. The colors that make up white have different angles of refraction, so they fall at different points and become visible.

EXPERIENCE "HOW TO OBTAIN WHITE COLOR FROM COLORED COMPONENTS?" In the same way as we have decomposed the white color into components, you can get back the white color from the colored components. If, on one side of the prism, we place seven colored light sources at the appropriate angles, we get a ray of white at the exit from it.

It is difficult to do such an experiment on your own, but there is another way. If you take a white circle and paint it in seven colors of the rainbow, and then plant this circle on an axis. And start rotating it quickly, place the colored circle, we will see white. This is due to the inertia of human vision. The eye cannot see each color separately on a rapidly rotating circle, and for him they all merge into one white color.

REFERENCE As a result of the work done, we made sure that the prism is able to transform a white ray into a seven-color, rainbow one. They found out that raindrops and ice crystals can divide the white color into seven colors, so you can observe the row in autumn, summer, spring and winter. But there are conditions under which such an amazing natural phenomenon can be seen. We got acquainted with the methods of obtaining a row and at home, the creation of white from colored components.

REFERENCES 1. Belkin IK What is a rainbow? - "Quant" 1984 2. Bulat V.L. Optical phenomena in nature. M .: Education, 1974. 3.Geguzin Ya. E. "Who makes the rainbow?" - Quantum 1988 4.Mayer V.V., Mayer R.V. "Artificial rainbow" - Quant 1988. 5. "I know the world." Children's encyclopedia. Physics O.G. Hinn - M, LLC 6. Bragin A. About everything in the world. Series: Great Children's Encyclopedia. Publisher: Ast, 2007. 7. Children's encyclopedia "I KNOW THE WORLD". AST - LTD "1998

Preview:

Hello! I, Sergei Antipenko, student of 1 "b" class of school №19

G. Izobilny. And this is my supervisor, Marina Nikolaevna Meshalkina.

Let me present my research paper "How to create a rainbow at home?"

Every person at least once in his life admired a natural miracle - a rainbow. Many have probably noticed that the rainbow, as a rule, appears after rain. I have seen a rainbow many times, and this phenomenon has always delighted me. Last summer, my parents and I walked around the city. The weather was sunny, but suddenly it started to rain: warm, fine drizzling. It stopped as quickly as it began, and literally immediately we all saw a rainbow in the sky. I wanted to know what a rainbow is and how it appears.

Purpose of the study: to determine what is the relationship between rain, sun and the appearance of a rainbow, and whether it is possible to get a rainbow at home.

The object of research is the natural phenomenon of the rainbow.

The subject of research is the origin of the rainbow.

Research problem:

1. how to create a rainbow at home;
2. how a rainbow appears and why it is multicolored;
3. how to create white from colored components.

Research objectives:

1. How does a rainbow appear?
2. When does a rainbow appear?
3. Can you get a rainbow at home?
4. How to get white from colored components?

The hypotheses put forward:

1. Suppose a rainbow appears in sunny weather during rain, when the sun's rays pass through the raindrops.
2. Suppose you can get a rainbow by replacing the sun's rays with an artificial light source.

Basic methods: study of literature, observation, experiment.

There is probably no person who does not admire the rainbow. This magnificent colorful phenomenon in the sky has attracted everyone's attention for a long time.We all know from childhood the saying “Every hunter wants to know where the pheasant is sitting”, there is also a less popular version “How once Jean the bell ringer knocked down a lantern with his head”. By the initial letters of these sayings, we memorize the names and sequence of colors of such an unusual and beautiful natural phenomenon as a rainbow.

Why does such a beautiful, and even colored picture appear in the air? We looked for the answer to this question in additional literature. Here's what we learned.

Sunlight, or an ordinary ray of white light, is actually a combination of all colors. When a ray of light moves through the air, almost nothing happens to it, but if a transparent substance that is noticeably different in density from air comes across in its path, interesting things begin to happen to the light. When light hits the boundary of such a substance, it deflects, but the most important thing is that each of its components deflects in different ways.

Isaac Newton proved that ordinary white is a mixture of rays of different colors. "I darkened my room," he wrote, "and made a very small hole in the shutter to let in sunlight." On the path of the sunbeam, the scientist placed a special triangular glass - a prism. On the opposite wall, he saw a multi-colored strip - a spectrum. Newton explained this by the fact that the prism decomposed white into its constituent colors. Newton was the first to guess that the sunbeam is multi-colored.

Every schoolchild can repeat Newton's experience. I repeated this experience, but with an artificial light source. We observed the decomposition of light into a spectrum as it passes through a prism at home, using a prism and a projector.

To do this, we “caught” a white ray with a prism and got an image of a rainbow on the wall. The light, which seemed white, played on the wall with all the colors of the rainbow (these multi-colored, bright stripes are called the solar spectrum). This is how we penetrated into the mystery of the ray, into which the famous English scientist penetrated 300 years ago.

We looked through the prism of white objects, they looked colored, rainbow. The rainbow is the most famous spectrum known to all.

So, for a rainbow to appear, a sunbeam needs to fly through a prism? But there are no prisms in the sky! How, then, does the rainbow appear?

2.2. How the rainbow appears

There is nothing strange here. A rainbow is simple, it is the sun's rays refracted in raindrops. When it rains, there is a huge amount of water droplets in the air. Each droplet plays the role of a tiny prism, and since there are a lot of them, a rainbow is obtained in half the sky. That's who it turns out to be building a multi-colored gate in the sky quickly and beautifully! Sun ray and raindrops. All rainbows are sunlight that passes through raindrops like prisms, refracts and reflects on the opposite side of the sky. The outer edge of the arch is usually red and the inner edge is purple. Seven colors are distinguished in the solar spectrum: red, orange, yellow, green, light blue, blue and violet.

Conclusion: a rainbow appears in sunny weather during rain, when the sun's rays pass through raindrops.

2.3. When the rainbow appears

Then the question arises: why do we not always see a rainbow when it rains in the sun?

1. A rainbow appears only when the sun peeped out from behind the clouds and only in the side opposite to the sun.
2. A rainbow occurs when the sun illuminates a curtain of rain.

You need to be strictly between the sun (it should be behind) and the rain (it should be in front of you). Otherwise, you will not see the rainbow! The sun, our eyes and the center of the rainbow must be in line! If the sun is high in the sky, then such a straight line cannot be drawn. That is why the rainbow can only be observed in the early morning or late afternoon. A rainbow appears provided that the angular height of the sun above the horizon does not exceed 42 degrees.

Is there a rainbow without rain?

It turns out that such a miracle also happens. In winter, ice crystals "float" in the air. They, too, can divide white into seven colors of the rainbow, so the rainbow can be seen even in winter. Air, although it seems completely transparent, in fact also decomposes light into its constituent colors. It is noticeable - it happens at sunrise or sunset. Passing through the thickness of the earth's atmosphere, its rays deflect a little, and as we remember, the red color deflects weaker than the others. It is for this reason that the sun, being near the horizon, acquires a red hue. Rays of a different color deflect more strongly, and yes, they no longer reach us.

Experience "Making a rainbow at home"

To make sure that the white color consists of seven colors and the rainbow can be obtained artificially, we carried out experience.

We needed a flashlight, a water tank, a flat mirror, white cardboard, and water. Experience progress:

1. Fill the tray with water
2. We put a mirror with a tilt.
3. We directed the light of the flashlight to the part of the mirror submerged in the water.
4. To catch the reflected (or refracted) rays, the cardboard was placed in front of the mirror.

As a result, a reflection of all the colors of the rainbow appeared on the cardboard, and we were able to get a rainbow at home.

Conclusion: the beam of light reflected by the mirror at the exit from the water is refracted. The colors that make up white have different angles of refraction, so they fall at different points and become visible.

Experience "How to get white from colored components?"

In the same way as we have decomposed the white color into components, you can get back the white color from the colored components. If, on one side of the prism, we place seven colored light sources at the appropriate angles, we get a ray of white at the exit from it.

It is difficult to do such an experiment on your own, but there is another way. If you take a white circle and paint it in seven colors of the rainbow, and then plant this circle on an axis. And start rotating it quickly, place the colored circle, we will see white. This is due to the inertia of human vision. The eye cannot see each color separately on a rapidly rotating circle, and for him they all merge into one white color.

4. CONCLUSION

As a result of the work done, we convinced that the prism can turn a white ray into a seven-color, rainbow one. Found out that raindrops and ice crystals can divide the white color into seven colors, so you can observe the rainbow in autumn and summer, and in spring and winter. But there are conditions under which such an amazing natural phenomenon can be seen. We met with methods of obtaining a rainbow at home, creating white from colored components.

In conclusion, I would like to thank my scientific advisor, Meshalkina Marina Nikolaevna, for her help in the course of my work.

Thank you for your attention!

Maria Savchenko

Introduction

Every person at least once in his life admired a natural miracle - rainbow... Many have probably noticed that Rainbow usually appears after rain. I have seen many times rainbow, I wanted to know - what is Rainbow and how does it appear, is it possible to get rainbow artificially at home.

Purpose of the study: find out if you can get rainbow at home.

The object of research is a natural phenomenon Rainbow.

Research subject - species rainbows and the possibility of obtaining them artificially.

Research problem:how create different types of rainbows at home?

Research objectives:

1. Find out what is Rainbow how it appears.

2.what types rainbows exist in nature and is it possible to get them artificially.

3. Put experiences of getting a rainbow at home.

Hypothesis:

Let's pretend that rainbow can be obtained if you replace solar rays:

1. artificial light - a lamp,

2. using water and felt-tip pens.

3.with candy "Skitels"

chosen by me experiments will allow you to see the rainbow at home.

Basic methods: study of literature, observation, experiment.

1. Relevance:

How does it appear Rainbow?

Even with the eldest group I know the saying “Every hunter wants to know where the pheasant is sitting. By the initial letters of these sayings, I remembered the names and sequence of colors of such an unusual and beautiful natural phenomenon as Rainbow... Why does such a beautiful, and even colored picture appear in the air? Together with my teacher, we looked for the answer to this question in the encyclopedia, on the Internet, watched educational cartoons about rainbow... We learned that rainbow can be seen near waterfalls, fountains sprayed by a watering machine.

Conclusion: Rainbow appears in sunny weather during rain, when the sun's rays pass through raindrops.

2. What types rainbows exist.

Seeing in the encyclopedia rainbow, I decided to find out what else rainbows exist.

Winter Rainbow- a very rare phenomenon, because the refraction of sunlight occurs not in water droplets, but in ice crystals.

Hazy or white Rainbow

It appears when illuminated by the sun's rays of a weak fog, consisting of small droplets.

Red Rainbow

In the last five or ten minutes before sunset, all colors rainbows, except for the red one, begin to disappear and, finally, only one red arc remains.

Practical part

The rainbow is a miracle of nature... Is it possible create this miracle yourself, at home? I decided to try it and did some experiments with my teacher.

Experience number 1« Making a rainbow at home»

Experience progress:

I used: rectangular tray, plain water, mirror, table lamp. I poured some water into the tray, lowered the mirror into it at a slight tilt. The beam of light from the lamp was directed to the part of the mirror submerged in the water.

By adjusting the tilt of the mirror, on a white sheet of cardboard I got this rainbow.

Conclusion: As a result, a reflection of all colors appeared on the cardboard rainbows, we were able to get rainbow in"Home" conditions. (attachment # 1)

Experience number 2 Growing rainbow

Material: plastic cup, napkin, water, markers

Experience progress:

I used a glass of water.

I folded the napkin several times vertically so that it turned out to be a narrow rectangle.

Then on the rectangle you need to put large dots with each color of the felt-tip pen. A line of colored dots should form. Then the napkin is placed in a glass of water.

Conclusion: water quickly rises up the napkin, painting over the entire long piece of napkin with colored stripes, in the form rainbows. (Appendix # 2)

Experiment # 3 For this experiment I took the CD and pointed it at the sunbeam. The rainbow immediately appeared... I started to change the position of the disc and put it on the table. Suddenly, a huge Rainbow.

Conclusion: One more I got a rainbow when pointing the disc at a white surface. (attachment number 3)

Experience no. 4 Rainbow of sweets"Skitels"

Material: water, Skitels sweets.

Stroke experience: Sweets are laid out on a white plate in a circle. Then pour warm water into the middle of the plate, so as to slightly wet the candies and wait, in a few seconds a miracle will happen! The candies begin to melt and give color to the water, resulting in multi-colored strips of water in the form rainbows.

Conclusion: the water dissolved the paint on the candies and it turned out Rainbow.

(attachment number 4)

CONCLUSION

My experiments have proven that rainbow it is very easy to do it yourself at home, using instead of sunlight a ray of light from an ordinary table lamp or flashlight, as well as using water and even ordinary candies.

The tasks set in our study were completed. The hypothesis was confirmed. We learned how create a rainbow at home, conducted experiments in different ways; told our children group about our research, showed them experiences.

Guys, try to experiment yourself and get rainbow at home.

Related publications:

Topic: "Experimental - experimental activity as part of the project." Everyone has long known that there is no more inquisitive researcher than a child.

Project "Experimental and experimental activities in the preparatory group"[Goals and objectives of the project. Project goal: Practical implementation of children's experimentation as a means of developing cognitive activity.

Experimental and experimental activities in the preparatory group "Water around us" Lesson on the topic "Water around us". Topic "Water around us. Water cycle in nature" Purpose: To draw the attention of children to the importance of water in ours.

In the preparatory group, experimental - experimental activity becomes a part of everyday life. But how to make it so that the children.

Experimental and experimental activities in the preparatory group "How to create a rainbow at home" Every person at least once in his life admired a natural miracle - a rainbow. Many have probably noticed that rainbows tend to appear.

Objective of the study: to determine what is the relationship between rain, sun and the appearance of a rainbow, whether it is possible to get a rainbow at home. Research object: natural phenomenon RAINBOW. Research subject: the origin of the rainbow. Research problem: how to create a rainbow at home; how a rainbow appears and why it is multicolored; how to create white from colored components.

Every schoolchild can repeat Newton's experience. I repeated this experience, but with an artificial light source. We observed the decomposition of light into a spectrum as it passes through a prism at home, using a prism and a projector. To do this, we caught a white ray with a prism and got an image of a rainbow on the wall. The light that seemed white played on the wall with all the colors of the rainbow. This is how we penetrated into the mystery of the ray, into which the famous English scientist penetrated more than 300 years ago.

HOW DOES THE RAINBOW APPEAR? When it rains, there is a huge amount of water droplets in the air. Each droplet plays the role of a tiny prism, and since there are a lot of them, a rainbow is obtained in half the sky. That's who it turns out to be building a multi-colored gate in the sky quickly and beautifully! Sun ray and raindrops. All rainbows are sunlight, which passes through raindrops, as through prisms, refracts and reflects on the opposite side of the sky.

THE EXPERIENCE “CREATING A RAINBOW IN HOME CONDITIONS” To make sure that the white color consists of seven colors and the rainbow can be obtained artificially, we conducted an experiment. We needed: a flashlight, a water tank, a flat mirror, white cardboard and water. Experiment: The tray was filled with water. A tilted mirror was placed. We directed the light of the flashlight to the part of the mirror submerged in the water. To catch the reflected (or refracted) rays, the cardboard was placed in front of the mirror.

THE RESULT ON THE CARDBOARD WAS A REFLECTION OF ALL THE COLORS OF THE RAINBOW, WE COULD GET A RAINBOW IN THE "HOME" CONDITIONS. Conclusion: the beam of light reflected by the mirror at the exit from the water is refracted. The colors that make up white have different angles of refraction, so they fall at different points and become visible.

EXPERIENCE "HOW TO OBTAIN WHITE COLOR FROM COLORED COMPONENTS?" In the same way as we have decomposed the white color into components, you can get back the white color from the colored components. If, on one side of the prism, we place seven colored light sources at the appropriate angles, we get a ray of white at the exit from it.

It is difficult to do such an experiment on your own, but there is another way. If you take a white circle and paint it in seven colors of the rainbow, and then plant this circle on an axis. And start rotating it quickly, place the colored circle, we will see white. This is due to the inertia of human vision. The eye cannot see each color separately on a rapidly rotating circle, and for him they all merge into one white color.

CONCLUSION CONCLUSION As a result of the work done, we made sure that the prism is able to transform a white ray into a seven-color, rainbow one. They found out that raindrops and ice crystals can divide the white color into seven colors, so you can observe the rainbow in autumn, summer, spring and winter. But there are conditions under which such an amazing natural phenomenon can be seen. We got acquainted with the methods of obtaining a rainbow at home, creating white from colored components.

REFERENCES 1. Belkin IK What is a rainbow? - "Kvant" 1984 2. Bulat VL Optical phenomena in nature. M .: Enlightenment, 1974 3. Geguzin Ya. E. "Who makes the rainbow?" - Quantum 1988 4. Mayer V. V., Mayer R. V. "Artificial rainbow" - Quantum 1988 5. "I cognize the world." Children's encyclopedia. Physics O.G. Hinn - M, LLC 6. Bragin A. About everything in the world. Series: Great Children's Encyclopedia. Publisher: Ast, Children's Encyclopedia "I EXPLORE THE WORLD". AST - LTD "1998

Feoktistova Yulia Rysaeva Elmira

Rysaeva Elmira Faizovna, Feoktistova Yulia Sergeevna

Supervisor: King Julia Nikolaevna

Project topic: "Creating a rainbow at home."

Purpose of the study: determine what is the connection between rain, sun and the appearance of a rainbow, and whether it is possible to get a rainbow at home.

Research objectives:

1. How does a rainbow appear?
2. When does a rainbow appear?
3. Can you get a rainbow at home?

The hypotheses put forward:

• Suppose a rainbow appears in sunny weather during rain, when the sun's rays pass through the raindrops.
• Suppose you can get a rainbow by replacing the sun's rays with an artificial light source.

Basic methods: study of literature, observation, experiment.

Experience "Making a rainbow at home"

To make sure that the white color consists of seven colors and the rainbow can be obtained artificially, we carried out experience. We needed a flashlight, a water tank, a flat mirror, white cardboard, and water.

Experience progress: Fill the tray with water , put a mirror with a tilt, directed the light of the flashlight to the part of the mirror submerged in the water. To catch the reflected (or refracted) rays, the cardboard was placed in front of the mirror. As a result, a reflection of all the colors of the rainbow appeared on the cardboard, and we were able to get a rainbow at home.

As a result of the work done, we convinced that the prism can turn a white ray into a seven-color, rainbow one. We met with ways to get a rainbow at home

Download:

Preview:

Department of Education of the Administration of the municipal district

Kuyurgazinsky district of the Republic of Bashkortostan

Research work

How to create a rainbow at home

Completed by pupils of grade 4b

MBOU SOSH №2 with. Ermolaevo

Kuyurgazinsky district

Republic of Bashkortostan

Feoktistova Julia

Rysaeva Elmira

Leader Korol Yu.N.

Ermolaevo - 2015

1. Introduction

2 why the rainbow appears

3 how the rainbow appears

4. When appears

5.Experience "Making a rainbow at home"

What could be more beautiful and fantastic than a rainbow? Only a rainbow made with your own hands. The easiest way to make a rainbow is to pass light through a prism. But the prism is not always at hand, and I really want to experiment with the rainbow.

There are several ways to make a rainbow at home from available tools, let's look at a few of them.

A rainbow from a disc

This is a very simple way to get a rainbow from an object that is found in almost every home today - a CD. The disc will fit any CD \ DVD \ Blueray, it is enough to reflect the sunlight from it and a beautiful rainbow will play on the white wall.

Rainbow from water

To do this, you need to pass light through the water. For example, you can put a glass of water on a windowsill on a sunny day and the light passing through the water will create a rainbow. If that doesn't work, you can take a mirror and put it in a glass of water and try to reflect the sunlight on it.

You can also take a flat, shallow container and place a mirror in it at an angle so that one half is above the water and reflect sunlight onto a white surface. The rainbow will appear immediately. The larger the container with water and the mirror, the larger the rainbow.

If the sky is overcast and the sun does not shine at all, a rainbow can be made in the same ways using a flashlight. But such a rainbow will not be so bright, so you will have to tightly curtain the curtains and then start experimenting.

Well, if the sun is shining brightly, there is another surefire way to make a rainbow. But for him you will have to go outside and find a hose connected to a tap with water. Now it remains to pinch the end of the hose so that the water comes out of it in a fine spray, and direct it up into the sun. A rainbow will play in the spray of water.