Physics topic 1 mind map
- Created by: jackhibbert
- Created on: 03-04-18 12:53
View mindmap
- PHYSICS TOPIC 1 - ENERGY
- A SYSTEM IS AN OBJECT OR GROUP OF OBJECTS
- WHEN A SYSTEM CHANGES, THE WAY ENERGY IS STORED CHANGES
- E.G A BALL HITTING A WALL
- SYSTEM IS THE MOVING BALL
- WHEN IT HITS THE WALL , SOME OF THE ENERGY IS TRANSFERRED AS SOUND
- E.G A VECHICLESLOWINGDOWN
- SYSTEM IS THE VEHICLE MOVING
- WHEN IT SLOWSDOWN , KINETIC ENERGY TRANFERS TO THERMAL DUE TO FRICTION BETWEEN WHEELS AND BRAKES
- E.G A BALL HITTING A WALL
- WHEN A SYSTEM CHANGES, THE WAY ENERGY IS STORED CHANGES
- CALCULATING ENERGY
- GRAVITATIONAL POTENTIAL Ep=mgh
- ELASTIC POTENTIAL Ee=1\2ke2
- SPECIFIC HEAT CAPACITY E=mc?t
- KINETIC ENERGY Ek=1\2mv2
- POWER p=w/t
- ENERGY TRANSFER
- ENERGY CAN BE STORED USEFULLY , STORED OR DISSIPATED BUT CANNOT BE CREATED OR DESTROYED. ENERGY CAN BE DESCRIBED AS BEING WASTED
- REDUCING ENERGY WASTE
- LUBRICATION
- REDUCESFRICTION
- OIL IN A MOTOR
- SO LESS ENERGY IS LOST(AS THERMAL) THROUGHT FRICTION
- THERMALINSULATION
- LESS USEFUL THERMALENERGY LOST
- DOUBLE GLAZING
- LUBRICATION
- NATIONAL AND GLOBAL ENERGY RESOURCES
- WIND RENEWABLE
- electricity generated
- does no provide constant source of energy
- electricity generated
- SOLAR RENEWABLE
- electricity generation and some heating
- depends on light intensity , so no power at night
- TIDAL RENEWABLE
- electricity generation
- high set up cost and can destroy habitats / cause problems for shipping
- COAL NON-RENEWABLE
- electricity generation, heating and some transport
- burning produces green house gasses
- NUCLEAR FUEL NON-RENEWABLE
- electricity generation and some military transport
- produces only radioactive waste and no emissions costly to build and reliable output
- GAS NON-RENEWABLE
- electricity generation, heating and some transport
- reliable output , burning produces CO2
- WIND RENEWABLE
- A SYSTEM IS AN OBJECT OR GROUP OF OBJECTS
Comments
No comments have yet been made