Energy-Paper 1 Flashcards
What is a System
A group of objects
8 energy resources
Thermal
Kinetic
GPE
Elastic
Chemical
Magnetic
Electrostatic
Nuclear
What is the conservation of energy
Energy can be transferred usefully, stored or dissipated but cannot be created or destroyed
What happens to wasted energy
The energy is dissipated
7 renewable energy sources
Wind
Solar
Tidal
Hydroelectric
Biofuel
Geothermic
Wave
4 Non renewable energy
Coal
Gas
Oil
Nuclear
What is an renewable energy resource
A renewable energy source can be replenished
4 energy pathways
Mechanically
Electrically
Heating
Radiation
Two ways to reduce energy waste
Lubrication
Thermal insulation
What is thermal conductivity
How quickly heat can be transferred
The higher the thermal conductivity of a material the higher the rate of energy transfer by conduction across the material
How the efficiency of a system can be increased
Insulation
Lubricantion
What is specific heat capacity
The amount of energy to raise the temp of 1kg of a substance by one degree
What is power
Rate at which energy is transferred
Rate at which work is Done
What is 1 watt
An energy transfer of 1 joule per second is equal of 1 watt
