ENERGY

ENERGY IS THE CAPACITY OF AN OBJECT OR A BODY TO TRANSFORM AN ENERGY SOURCE INTO WORK

TYPES OF ENERGY

MECHANICAL ENERGY ELECTRICAL ENERGY ELECTROMAGNETIC ENERGY SOUND ENERGY CHEMICAL ENERGY NUCLEAR ENERGY THERMAL OR CALORIFIC ENERGY

ENERGY SOURCES NON-RENEWABLE

NUCLEAR ENERGY: NUCLEAR FUSSION:JOIN TO FORM A HEAVIER NUCLEUS NUCLEAR FISSION:SPLIT INTO TWO LIGHTER NUCLEI

COAL ENERGY : OPEN-CAST MINES UNDERGROUND MINES

PETROLEUM ENERGY: OIL TANKERS OIL PIPELINES

NATURAL GAS: IT’S EXTRACTED BY DRILLING IT’S TRANSPORT LIQUID

NON-RENEWABLE ENERGIES AND THE ENVIRONMENT

INCREASED GREENHOUSE EFFECT ACID RAIN OIL SPILLS NUCLEAR WASTE RISING WATER TEMPERATURE ATMOSPHERIC POLLUTION

HEAT ENGINES

External combustion engines

Steam engineSteam turbine

Internal combustion engine

Combustion engineTurbojet

THE FOUR-STROKE CYCLE

1. Intake: the intake valve opens. The piston descends from the top to the botton of the cylindrel and mixture of fuel and air enters the cylinder

2. Compression: the intake valve closed. The piston rises and compresses the mixture

3. Combustion power: a spark from the distributor ignites the compresed mixture. The gases expand and push the piston down. Thies is when power is produced.

4. Exhaust: the exhaut valve open. The piston pushes the hot gases out, and a new cycle begins

Energy

Capacity of an object to transform an energy into work

Types of energy

Maechanical, nuclear, thermal or calorific, chemical, electrical, electromagnetic, sound

Transformation

The law of conservation of energy : energy can not be create or destroyed it can be only transformed

Measurement

Joules, in the international system and calories

Energy sources

Natural resources that provide different forms of energy

Non-renewable

Nuclear, energy from fossils fuels, coal, petroleum, natural gas

Renewable Hydraulic, solar, wind, marine, geothermal, biomass, MSW.

Heat engines

Transform thermal energy from a fuel into mechanical energy to perform work

External combustion engine

Steam engine and steam turbine

Internal combustion engine

Combustion engine and turboject

REBECA SIERRA ARGÜELLO & MONTSE

MORÁN SUÁREZ

THE END