ENERGIES - TIDAL ENERGY

Tidal energy is one that uses the movement of water generated by the tides. It has all the advantages of sustainable energy and few drawbacks that can be overcome with proper planning. Tidal energy is a sustainable and green energy has the greatest potential for future use, and currently hardly used. According to studies conducted by experts tidal power may be one that has a higher of all renewables in the next decade annual percentage growth. The main advantages of tidal power is that it is a clean, green, renewable, quiet and energy just being used. Power generation from waves produces no greenhouse gases. You can get large amounts of energy in a very efficient and unlimited as tides, in the places where they occur, tend to be very regular, so obtaining this type of energy is much easier than other renewables.

OFF TOPIC - TECHNOLOGY

Is a group of technical  knowledge and used to create goods and services for society, also this the technological education that teaches us the most important technologies. The technology influences in the society and the economy. Over time the technology is progressing and forming new objects.

ENERGIES - RENEWABLE ENERGY

Is the energy that is produced by nature and probably won´t spend. Alternative energy is similar to renewable energy, that generate a few gases of greenhouse.

ENERGIES - SOLAR ENERGY!

I think that the solar energy is radiation from the sun, it´s used by humans and it´s essential. Heat and light can be harnessed and converted into electrical and thermal energy. It´s a renewable energy. The solar panels are used to obtain energy.

EXERCISES - MIND MAPS UNIT 4

 An inconvenient truth (alarmists)

The great global warming swindle (skeptics)

UNIT 4 - POLLUTION

The pollution is a ecosystem formed by a chemical.
The pollution effects in our world because it is destroying, we have to stop, we won´t throw papers on the floor and in the sea... If we stop the pollution the world is better. Together we can.

UNIT 4 - GLOBAL WARMING

I think global warming is destroying part of the world, as several parts of the world are defrosting.

PLAYLIST - PROCESSES

This is our playlist of processes:

http://www.youtube.com/playlist?list=PLKJDaysVAZPJzE9tWlFXfyWUfMZet7xrJ

PROCESSES - WELDING

There are two types of welding ; Normal welding and arc welding
In normal welding you can joining the material with heat and in arc welding you joining a metalic plate with electrical arc (heat)

EXERCISES - Dealing with waste

6 Tecnologia Silvia by mariacondadoa

ACTIVITY 2. 3* The tag are sticked with soluble glue for dacility unstick, the other things aren´t important. It´s important the plastic are recycled.

OFF TOPIC - Technology

I think that technology is a very interesting subject because it helps us understand and teaches us to know things around us and formation of many materials.

EXERCISES - The properties of plastics

tecnologia 4 by mariacondadoa

PLASTICS - What are the plastics?

The plastic is a material that is in all objects and in some types of clothing, before the plastic was very expensive and now though is everywhere. I think it is an essential material because otherwise most things would be different.