Observations
The glass filled with hot water up to the top. On the surface of the water in the glass can be seen the active emission of vapor. This vapor is formed by molecules that have a higher energy and speed than other water molecules. The water was left in the glass for a minute. During this time, the glass has warmed uniformly. Then the water was poured from a glass. The inch of hot water left at the bottom of the glass. The inner walls of glass began to sweat a little. Then the glass was covered with a thin polyethylene. Surface covered with polyethylene was slightly swollen. This can be explained by the fact that water vapor creates a certain pressure on the inner walls of glass and polyethylene. Then ice cubes were placed on polyethylene. A few seconds later, a light white fog appeared in the glass. The most intense fog was on the border with polyethylene on top of the glass. The small circulation of fog was visible near the surface.
Analysis of the experiment
As a result of the experiment, the fog was obtained. This result can be explained in terms of basic physical processes. Inside the glass, in addition to water and water vapor, there was also the air. When we covered the glass with polyethylene and put the ice on it, the temperature inside the glass has decreased. Therefore, the air pressure inside the glass has also decreased. So, the water molecules could easily evaporate from the surface of the water. As a result, the amount of water vapor has increased in the glass. The steam began to rise up. When the steam has reached the polyethylene, the temperature of steam began to decline. When the temperature has dropped, the steam began to cool and condense, creating small water droplets in the air. This is the reason of fog in the glass. Also this fact explains why the fog was most noticeable near the surface of the glass.
Cloud Chart
Day NumberMorning WeatherCloud TypePredictionActual WeatherComment
1Sunny, light wind CirrocumulusWill be clear sky without precipitationNo precipitation but there are cumulus clouds located far from each other The prediction was accurate enough
2Partly cloudy, strong worm windStratocumulusThe precipitation is possibleThe clouds dispersed, no windThe prediction did not come true. This kind of cloud is very difficult to predict
3Sunny, strong worm windCumulusPrecipitation is not expected, the weather will be sunnyIntermittent rainThe prediction did not come true. The reason is the effect of wind on the weather.
4Cloudy, strong cold windNimbostratusHeavy rainfall or hailCloudy, steady rain This type of clouds is heralds bad weather often
5Cloudy weather with clearings, light windAltocumulusSunny weather without precipitationLight breeze, sunny weatherThis clouds usually appear after a heavy rain or storms
Analysis
It is very difficult to identify some of the clouds. Sometimes it is possible to see not one type of cloud but several in the same time. In this case it is necessary to determine what …