Geography

Climate and natural landscapes

• Weather is the mix of events that happen each day in our atmosphere including temperature, rainfall and humidity. Weather is not the same everywhere. Perhaps it is hot, dry and sunny today where you live, but in other parts of the world it is cloudy, raining or even snowing. Everyday, weather events are recorded and predicted by meteorologists worldwide

• .Climate in your place on the globe controls the weather where you live. Climate is the average weather pattern in a place over many years.

         




 

What is global warming?

Global warming is when the earth heats up (the temperature rises). It happens when greenhouse gases (carbon dioxide, water vapor, nitrous oxide, and methane) trap heat and light from the sun in the earth’s atmosphere, which increases the temperature. This hurts many people, animals, and plants. Many cannot take the change, so they die.

What is the greenhouse effect?

 The greenhouse effect is when the temperature rises because the sun’s heat and light is trapped in the earth’s atmosphere.


 

What is global warming doing to the environment?

Global warming is doing many things to people as well as animals and plants. It is killing algae, but it is also destroying many huge forests. The pollution that causes global warming is linked to acid rain. Acid rain gradually destroys almost everything it touches. Global warming is also causing many more fires that wipe out whole forests. This happens because global warming can make the earth very hot. In forests, some plants and trees leaves can be so dry that they catch on fire.

 I think it is very important that people especially young minds take very seriously the global warmig, we should try to take care of over the planet becuase is our future.

Layers of the Earth's Atmosphere

The atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space.
1) The troposphere is the first layer above the surface and contains half of the Earth's atmosphere. Weather occurs in this layer.
2) Many jet aircrafts fly in the stratosphere because it is very stable. Also, the ozone layer absorbs harmful rays from the Sun.
3) Meteors or rock fragments burn up in the mesosphere.
4) The thermosphere is a layer with auroras. It is also where the space shuttle orbits.
5) The atmosphere merges into space in the extremely thin exosphere. This is the upper limit of our atmosphere.

        
  experiments of geography
http://centros3.pntic.mec.es/cp.la.canal/clima/experim.htm



The Earth´s relief

What is the Earth relief ?
Mountains, plateaux, plains, depressions, continental shelves, deep-sea trenches, oceanic ridges, etc. The Eartn relief are divided in two part contineltal and submarine relief.

• Continental Relief

The continents occupy approximately 30% of the earth's crust. They comprise the emerged land and the nearby submerged area, called continental shelf. The main forms of continental relief are:

Mountains
Plateaux
Plains
Depressions

• Submarine relief

Are the bottom of the sea and oceans is a rough and diverses as contineltal relief

Continentla shelves
Continental sloples
Oceanic basins
Oceanic ridges