PHENOMENON : SKY and CLOUDS
The clouds and the sky are my objects for my phenomenon. The phenomenon I am presenting is the contrast in the shapes of the clouds, the spatial placement and the variety of colors that are displayed in the sky and in the clouds.
First the definition: a cloud is a visible mass that is composed of condensed droplets of water or frozen crystals in the atmosphere. One way in which a cloud can form is when warm air comes in contact with cool air or when the warn air flows over a cool body of water such as a lake, or ocean. Clouds can also be formed when air flows up a mountain and cools has it rises higher into the atmosphere.There are different cloud types depending on there height and what they are composed of..
High clouds- height above 16,500 feet, (cirrus), at this high altitude water always freezes so the clouds are composed of mainly ice crystals.
Middle clouds- height between 6,500 feet and 16,500 feet, (altostratus), theses clouds are composed of water droplets and are very cool.
Low clouds- height up to 6,500 feet (stratus), these are the dense and grey clouds which we call fog when it contacts the ground.
The colors, what about the colors…The colors, what about the colors… cloud colors are usually the reflection of there surrounding environment. They may not be colored at all, but in some cases they are. The common white color of a cloud is because the dense water droplets form which the cloud id composed of don’t allow sunlight to penetrate to far before being reflected out. The grey and black colors of a cloud is because it is very dense with water droplets and allow very little sunlight to be reflected out. Red, orange and pink colors are seen mainly at sunrise and sunset, this is the result of scattering sunlight by the atmosphere itself, the clouds themselves are not that color. Bluish grey are the result of light scattering with in the cloud. Blue and green are the short end of lights wavelength. And red and yellow are the long ends of the wavelength. The very rare yellowish color in a cloud is do to smoke in the atmosphere.