2. Is the capacity of an objet to transform an energy source into work. What is energy ? Energy Maria Díez Julissa Calero

3. T YPES OF ENERGY Mechanial energy :  Kinetic energy  Potencial energy Electrical energy. Electromagnetic energy. Sound energy. Chemical energy. Nuclear energy. Thermal energy.

4. P OWER The power of machine is the quantity of work it can do in a unit of time P= W/t P = Power measured in watts W=Work measured in joules. T = Time measured in seconds

5. U NITS OF ENERGY 1000j = 1kj There are used to measured larger quantities of energy 1 cal = 4,18 joules There are used to measured larger quantities of heat JOULESCALORIES

6. TRANSFORMATION OF ENERGY 4. Luminous energy Elctrical energy 5. Metabolic energy Kinetic energy 6. Chemical energy Thermal and sound energy,movement and heat. 1. Chemical energy Electrical energy 2. Nuclear energy Luminous and Thermal energy 3. Chemical energy Mechanical 7. Electrical energy Kinetic and thermal energy and movement

7. ENERGY SOURCES T HEY ARE NATURAL RESOURCES THAT PROVIDE DIFFERENT FORMS OF ENERGY. Non-renewable They are energy sources that come from natural resources that are limited. Nuclear energy: Natural Gas: Nuclear fusion. Extraction by drilling Nuclear fission. Is transported liquefaction Coal: Extraction: Open-cast mines Underground mines Petroleum: Extration : By drilled in ground or under the sea.

8. They come from unlimited natural resources. Hydraulic energy: It is produced by the movement of water. Solar energy: It is produced by the ultraviolet ray of the sun. Wind energy : It is produced by the mechanical energy that is produced by the wind. Marine energy There are 3 types: Tidal energy. Wave energy. Ocean thermal energy Geothermal energy This energy comes from the heat stored in t he earth´s crust Biomas: This is produced from plant remains, forest and agricultural waste. Municipal solid waste. This is generated in cities.

9. 1.1 Combustion Engine: 1. Intake 2.Compression 3.Combustion-power 4.Exhaust 1.2 Two-stroke engine This engine is the same that combustion engine but the different is that this engine have 2 openings and the mixture is in the inside H EAT ENGINES

10. 1.3 T HE DIESEL ENGINE Air Compressed High temperature FuelSpark

11. 1.3 T URBOJECT Air Air + Fuel Spark

12. Energy Types: Mechanical, nuclear, thermal, chemical, electrical, electromagnetic, sound. Energy cannot be created or destroyed it can only be tranform IT can be measured in joules and calories. Capacity of an object to tranform an energy source into work

13. Energy sources Non-renewable: Nuclear energy that come from fossil fuels. Renewable: Hydraulic, solar, wind, marine, geothermal. Natural resources that provide different forms of energy

14. Heat engines External combustion: Combustion engine and steam engine Internal combustion: Turboject Tranform thermal energy from fuel into mechanical energy to perform work.

15. T HIS IS THE UNIT OF ENERGY Thanks for waching