Topic for oral presentation

Hi.

Well I will talk about my topic for oral presentation in the university, is about Geography, and I'm interested in the clouds.

The clouds are very important because they is a response of the climate changes in the planet, they are a factor important in diversify of weather because they are an element primordial in the climate.

The clouds are classified in physical terms and their altitude. Also every one have a effect, accion different o work, some are of stormy, others are of the rain, etc.

They are important for us because they give rain, and for that, we don't suffer by drought.

Also the clouds absorb the energy of sun, the "incident" energy , being a important factor of protection against sun rays for the humans.

In many places of the world without rain or clouds the scientists make clouds, this practice is called "siembra de nubes", because "they have problems with the water".

We have many clouds beautiful and is easy recognize too, the most common are the stratus they are present in summer and days with sun, The cumulus are all year, specially during the summer too. The nimbus are clouds of rain, We see that in winter and the cirrus are clouds of stormy,so when you see at the cumulonimbus... run for your life!!! they are a clouds of storm.

To know about the different types of clouds help you to identify some aspects of the day to day, for example, you will know when will rain. or in extreme cases, when a snowfall will take place.

All this process and phenomena happen in the atmosphere, in the layer called "tropopausa"

Probably were to ask... why there are clouds grey and white clouds? what is the difference?... Well, the grey clouds are the clouds of rain and they are composed  by water, and the white clouds, due to their altitude, they are composed of ice!! for particles of ice, because higher is the altitud, minor is the temperature, and the water molecules are frozen.

See the video for more information :)