4 of March

We were divided in groups to finish discussing the topic wenhad read. Our topic was air pollution.

After it, two people from each group had to come to the blackboard and explain their topic.

Air pollution

There are primary gases, which are our responsibility ( example: the smoke of the cars) and when this gases go up to the atmosphere, they mix with the particles and form the secundary gases. The secundary gases are very dangerous to the ozone layer . Although we do not make the secundary directly, they are our resposibility.

Why we see the rainbow?

Why the sky is blue?

- Wavelenght

- Scattered- the light does not go directly

- The direction of the light

- The lights of the sun has every color but the earth absorb everything except pink, so we have pink sky.

CFS

When sunlight comes, the CFs divide into atoms. The atoms reduce the Ozone so we are less protected. The ozone holes are at the poles because we have there less amount of Ozone.