Physics Part 2 (P2) Knowledge Questions Flashcards
The scientific name for heat energy is _ energy
Thermal/internal
Heat travels through a solid by _
Conduction
Heat travels in fluids by _
Convection
Heat travels through space by _
Radiation
Fluids are _ and _
Liquids and gases
Metals have higher thermal conductivity than non-metals this means they conduct heat _
Faster/better
Metals have a Higher thermal conductivity because they have _ _
Delocalised (free) electrons
A coloured image showing heat leaving objects is called a _
Thermogram
The amount of energy it takes to heat up 1 kilogram of a substance by 1*C is called its _ _ _
Specific heat capacity
Two examples of home insulation are _ and _
Any 2 from: cavity wall insulation, draught excluders, double glazing, triple glazing, loft insulation, carpet underlay, carpet
Energy not being stored in useful ways is described as being _ energy
Wasted
The electromagnetic wave which carries thermal energy is called _ _
Infrared radiation
Dark colours are good _ and _ of Infra-red
Emitting and absorbing (any order)
Shiny colours are good _ of infra-red
Reflectors
A larger difference in temperature between an object and it’s surroundings will cause the object to cool _
Quicker/faster
Global warming is caused by _ _
Greenhouse gases (accept named gases)
