February 28, 2020

Today, just at the beginning of class, we have been reviewing the exam questions we did the day before in which we had some doubts.

Next, we have taken up the theme of the atmosphere,

What is the atmosphere like?

We can make different distinctions starting with layers;

Why do we say it has layers?

Because it increases and decreases in temperature.

-          Troposphere. The first one, where weather occurs. We have vertical mixing of air. Main composition is Nitrogen and Oxygen. It is hated with radiation emitted from Earth.  

-          Stratosphere. Beyond the troposphere up to 50 km. Atmosphere ozone is concentrated in this layer. Heat source: ultraviolet radiation.

-          Mesosphere. Here temperature drops. Lowest temperature in the atmosphere. Here occur what we call meteor shower.

-          Thermosphere.  We do not have much mutter. We have very few particles. The density is much nearer vacuum

Then we have been talking about the green house.

It is a natural and very important process for us.

We are causing global warming because of contaminants that we use in our day to day.