p2- energy transfer by heating

where does conduction mainly occur in?

conduction mainly occur in solids

where does convection occurs in ?

convection occurs in fluids

where does radiation travel through?

radiation travels through a vaccum

what does insulating your house reduce?

insulating your house reduces energy loss

how can energy in the home be transferred?

energy in the home be transferred usefully and wasted

4 ways a house is designed to loose less energy

cavity wall insulation,loft insulation,double glazing,

whats something with high conductivity claled?

conductor

whats something with low conductivity called?

insulator

what 2 states of matter are good conductors and bad

solid is good conductors and liquid,gases are poor

whats a good conductor material?

metals are good conductors

3 factors affecting the rate of heat transfer

the thermal conductivity of a material,the thickness of mateiral,temp difference across the material

what is double glazing

double glazing is 2 layers of glass with an air gap between reduce conduction

whats loft insulation?

loft insulation like fibreglass reduces rate of energy transfer on the roof the house by conduction and convection

whats cavity walls insulation

2 layers of bricks with a gap between them reduces conduction but energy transfers across the gap by convection. squirting insulating foam into the gap trap pockets of air to minimise this convection

what does the thickness of walls affect?

the thickness of walls affect how quickly energy is transferred out of a building

the thicker the walls the lower what?

the thicker the walls the lower tje rate of energy transfer?

the thicker the material,the slower what?

the thicker the material,the slower the cooling(the lower the rate of energy transferred)

the higher the thermal conductivity faster what?

the higher the thermal conductivity the faster the cooling (the higher the rate of energy stransfer)

reducing friction reduces what

reducing friction reduces energy loss

how is friction reduced? give e.g

friction is reduced with lubriction like oil

by changing the shape of what can you reduce friction ?

changing the shape of an object like making a car more streamlined reduces friction from air resistance