Okay, you 8th graders know that color change can indicate a chemical reaction. You 7th graders know about the energy that light can carry. So explain to me if, or if not, a rainbow is a chemical reaction? Give me some details and repeat responses
welch
4/8/2013 07:41:53 am
We know that light carries or is a form of energy; the energy in different wavelengths operates at different frequencies...the different wavelengths in the visible light spectrum can be "seen" as different colors. The different colors absorb the energy from the sun and the magnifying glass at different rates. The greater the amount of energy absorbed by the darker the color, the sooner that color catches on fire or ignites. The molecules in the darker colors get more excited or stimulated and produce greater heat; the molecules in the lighter color are less stimulated or energetic so that the amount of heat or engery is less.
Mr. casey
4/8/2013 09:55:37 am
I'm glad you chimed in, but this talks about your lab, not my actual question. Maybe I didn't make myself clear. I'm talking about real rainbows in the sky! :-)
Bodger Period 7
4/9/2013 08:03:10 am
i think a rainbow is not a chemical reaction, because its an optical "illusion" that is caused by the dispersal of sun in the air when there is rain, or condensation in the sky. The different ways that the sun hit the rain causes it to cause a "bow"/ arch shape with the different colors of the rainbow (ROYGBIV). This is also why its called a rainbow
Mr. Casey
4/10/2013 01:48:13 am
IF this is the case, what is actually happening to the energy as it get's dispersed by the rain? ...but isn't color change one of the possible indicators of a chemical reaction?
Anthony H
4/10/2013 08:52:18 am
No, a rainbow is a chemical reaction because it is like when you have a piece of glass and shine a flash light sometimes it will split into different directions as different colors. Also because after rain, it starts to evaporate and when the sun light hits the water the energy it splits the light into different directions. I THINK! Please correct me if I am wrong.
Marco B
4/10/2013 02:09:47 pm
Your on the right track Anthony. But it's not a chemical change. A rainbow is an optical illusion caused by light bending past condensation in the air and the refracting into different colors like periwinkle :). I could see how you think it's a chemical change because a change needs color but it needs something else too. Maybe it precipitates...maybe it is a chemical reaction.
Mr. Casey
4/11/2013 03:08:28 am
Interesting! Who else wants to put in their ideas?
Stephanie Adams
4/11/2013 01:57:24 pm
It is not a chemical reaction. It is a light or optical reaction. A rainbow is when light particles reflect off of water/moisture (even raindrops) and it causes the colors of the light spectrum to be visable.
Rogelio Guerrero
4/22/2013 04:30:35 am
It's not a chemical reaction. A rainbow is an optical and meteorological . Caused by reflection of a light on the water.
Daniela Alvarado
4/22/2013 04:32:35 am
The rainbow is not a chemical reaction because it has a reflection of the light in the water droplets. The Earth atmosphere is resulting of the light appears in the sky.
Mr. Casey
4/22/2013 04:45:06 am
Okay, you're chiming in on an old blog, but let's do this.... Can anyone using the term refraction explain how a rainbow happens?
alyssa dominguez
5/22/2013 09:14:37 am
No it is not a chemical reaction. It is more of an optical illusion because of how light reflects off of water. This I'd what causes a rainbow to form and it dorsnt necessarily have a chemical reaction Comments are closed.
|
This blog is for you...Feel free to share some curious train of thought you have, as well as share your thoughts on others. Archives
June 2014
Categories |