energy energy is the capacity of an object or a body to transform an energy source into work
TRANSCRIPT
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