Topic 1- Energy Flashcards
What are the 8 energy stores?
- kinetic
- thermal
- chemical
- gravitational potential
- elastic potential
- electrostatic
- magnetic
- nuclear
What is a closed system?
Where neither energy nor particles can enter or leave.
What are the four energy pathways?
Energy can be transferred:
- mechanically
- electrically
- by heating
- by radiation
What is work done?
energy transferred
What is the conservation of energy principle?
Energy can be transferred usefully, stored or dissipated, but never created or destroyed.
What is power?
Power is the rate of energy transfer (or work done)
What is conduction?
Conduction is the process by which vibrating particles transfer energy to neighbouring particles.
What is convection?
Convection is where energetic particles move away from hotter to cooler regions.
What states does convection occur in?
Liquids or gases (fluids)
What are some ways to improve efficiency?
Insulating objects, lubricating them or making them more streamlined.
