domingo, 21 de marzo de 2010
The song.
Publicado por moni 3ºA xeobilingue en 13:50 0 comentariosTry to explain this cartoon:
Publicado por moni 3ºA xeobilingue en 13:42 0 comentariosmartes, 16 de marzo de 2010
3.Find out.
Publicado por moni 3ºA xeobilingue en 11:01 0 comentariosmartes, 9 de marzo de 2010
2- Renewable energy resources
Publicado por moni 3ºA xeobilingue en 9:57 0 comentariosEnergy from sunlight is captured in solar panels and converted into electricity. Advantages: Potentially infinite energy supply. Disadvantages: Manufacture and implementation of solar panels can be costly.
2-A)Wind
Wind turbines(modern windmills) turn wind energy into electricity. Advantages: Potentially infinite energy supply. Disadvantages: Manufacture and implementation of wind farms can be costly.
3-F)Tidal:
The movement of sea water in and out drives turbines. Advatages: a lot of energy is generated this way. Disadvantages: Construction can be costly.
4-B)Geothermal:
It is possible to use heat from under the earth´s surface in volcanic regions. Steam can be used for heating or to power turbines creating electricity. Advantages: Potentially infinite energy supply. It is used successfully in some countries, such as New Zeland. Disadvantages: Can be expensive to set up. Only works in areas of volcanic activity.
Energy harnessed from the movement of water through rivers, lakes and dams. Advantages: Creates water reserves as well as energy supplies. Disadvantages: Costly to build. They can cause the flooding of surrounding communities and landscapes. Dams have major ecological impacts.
An organic material which can be burnt to provide energy (heat or electricity). Advantages: It is a cheap source of energy. Disadvantages: When bumt, it gives off atmospheric pollutants,including greenhouse gases.
1- Raw materials
Publicado por moni 3ºA xeobilingue en 9:21 1 comentariosAnimal raw materials | Vegetal raw materials | Mineral | Raw | Materials |
silk | cotton | Metallic | Non-Metallic | Power |
milk | wood | iron | oil | coal |
tuna | tomatoes | bauxite | granite | |
skin | linen | gold | diamonds | |
ivory | resin | cooper | solt | |
wool | rubber | mercury | sulphur | |
cork | ||||
EXPLAIN:
-Shoes: skin
-Chairs: wood
-Juice: fruit
-Jewels: diamonds
-Keys: iron
-Thermometers: mercury
-Windows: glass
-Doors: wood
-Notebooks: paper
-Sweaters:cotton
-Oil: oil