A rainbow forms when it is raining and the sun is out too. For example, if you do a project and get the materials: water, a crystal, and a light. First of all you have to put the crystal in the sun so the light can hit the crystal. then you are going to get a bowl of water and put it by the sun too. The bowl has to be in front of the sun and then the crystal after it. Then the light reflects the rainbow and that os how a rainbow forms if you do an experiment.
The real rainbow is similar to the experiment you are doing, but a little different. When it rains, you can see the raindrops falling. Rainbows form when sunlight and rain combine in a specific way. When the drops fall down, the sun rays reflect on it and then the colors begin to show. Then when the rainbow shows the rainbow forms. It is similar to the experiment you would do, but in a bigger way.
When the rainbow forms it needs sunlight and water to form. Well the sun is combined with different colors, but you can't see them. The rainbow also forms because if the sun hits the water drops in a certain angle, the colors start to show and the rainbow is formed. this is why we see the rainbow and how it forms. Also the colors of the rainbow are red, orange, yellow, green, blue, indigo, and violet. This was how a rainbow forms.
I made research, and I found out why the sky is blue. The sky is blue because the sky absorbs all of the colors of the rainbow and the color blue is the brightest of all. The sky is also blue because since the sky absorbs all of the colors at the same time, the blue color is the color that stands out of all of them. The sky is blue because the colors scatter around and when they scatter, the only color left is blue. Th sky is also blue because all the of the colors are dull and the color blue stands out the most. Scattering helped because all of the colors you see are all scattered around and your eyes just focus on the color that stands out the most.
I got this information from the internet, and it helped a lot because now I know why we see the sky blue and I also learned why the grass is green. The grass is green for the same thing about the blue sky. I looked in Google so I can write why the sky is blue. I also looked up for the word scattering and that is also how I discovered why the sky is blue. These were some reasons why we see the sky blue and how it appears to be a blue color.