Energy stores & systems
- Created by: RiaB2003
- Created on: 06-02-19 14:27
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- Energy stores and system
- Examples
- Chemical, eg- fuel, food, battery
- Kinetic eg- moving objects
- Gravitational Potential eg- raised mass
- Elastic eg- stretched spring
- Thermal eg- hot object
- Magnetic eg- 2 magnets
- nuclear eg- nuclear fuel
- electrostatic eg- 2 charges
- Examples
- object thrown upwards- k.e decreases & g.p.e increases
- moving object hits an obstacle- k.e transferred & energy dissipated - sound & thermal energy
- ke of object - increases- accelerated by force
- when vehicle breaks- ke store decreases & thermal energy store increases- friction in brakes
- When kettle boils- energy transferred electrically- increase thermal store in water
- Energy can be transferred in 3 ways:..
- by heating
- through use of forces
- electrically by electric current
- Conservation of energy
- can be transferred usefully to other stores- can be wasted/ dissipated to surroundings
- energy cannot be created nor destroyed- total energy in closed system- same as before transfer
- A closed system is isolated system where no energy flows in/ out of the system
- Examples
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