The document provides information about different types of energy sources and power stations. It discusses various forms of energy including mechanical, electrical, chemical and nuclear energy. It describes different power generation methods like coal, nuclear, hydroelectric, solar, wind, biomass, geothermal and fusion energy power stations. For each power station type, it outlines the basic process and discusses advantages and disadvantages. The document also covers energy units, energy consumption in Spain and its dependence on fossil fuels for electricity production.

1. Unit 5. Energy

2. Unit 5. Energy 5.1 Energy 1.1Units 1.2 Forms and Sources 5.2 Electric energy 2.1 Production 2.2 Distribution 5.3 Main Power Stations 5.4 Alternative Power Stations 5.5 Consume

4. 5.1.1 Energy. Units In physics we define mechanical work as the amount of energy transferred by a force acting through a distance W= F • d d= distance between A and B F= Force applied to move the object F d

5. 5.1.1 Energy. Units Therefore, in this example, the energy that black cartoon has, the express the work that can apply to this box,

6. 5.1.1 Energy. Units Units There are several units of energy that are used in special areas, the most popular are the j, cal and kwh. Joule calorie kwh

7. 5.1.2 Forms and Sources Joule (J) is the International System’s unit for work, and is usually expressed in Kj. 1kj is the energy need to raise 100kg 1 meter high 1 meter

8. 5.1.2 Forms and Sources Calorie (cal) This unit is usually used to express energy that involves calorific transference. When energy is used in the alimentary industry, it’s usually express in Kcal. In the USA, they write Cal instead of Kcal… In order to heat 1 L of water from 20 to 21 ºC we need 1kcal

9. 5.1.1 Energy. Units A human being needs around 2000 kcal per day of energy to do all the work that it needs.

10. 5.1.1 Energy. Units When you drink a Coke you are absorbing 139 Kcal of energy that is stored in the 39gr of sugar dissolved in the liquid.

11. 5.1.1 Energy. Units 1º Exercise: Investigate the energy that these foods have per 100 gr: Yogurt Big Mac Bread Apple Biscuits Orange Fanta Cereals Oil Chips Butter

12. 5.1.1 Energy. Units KiloWatt/hour(kwh) It’s the unit used to measure the electric consumption of an electric installation. When we use a hairdrier of 1000 W for 1h, we have consumed 1 kwh

84. Admision Valve Escape Valve Piston movement Admision OK Compression Explosion- expansion Escape OK