Quiz
Keeping Homes Warm
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Fragen in diesem Quiz (15)
1How is energy loss reduced in double glazing?
- AConvection
- BConduction
- CRadiation
2What is the gap between the sheets of glass filled with?
- AA vacuum and/or air
- BA vacuum and/or foam
3Why is it difficult to transfer energy in double glazing?
- AParticles in gasses are too far apart and there are no particles in a vacuum
- BParticles collide more frequently because there is more space for them to move around in
4How does Loft Insulation reduce energy loss?
- ARadiation and Conduction
- BConvection and Conduction
5After the warm air is transferred through the ceiling, what happens?
- AAir in the loft is warmed and the particles can move by convection
- BAir in the loft is warmed by the ceiling and trapped in the insulation
6Why is no energy transferred by the ceiling?
- ABoth sides of the ceiling are the same temperature
- BBoth sides of the ceiling are different temperatures
7How do Cavity Walls reduce energy loss?
- ABy convection and conduction
- BBy radiation and convection
8Why is the foam important and what happens to the air within it?
- AThe air gets trapped within it making it a good insulator
- BThe air sits on top blocking any energy passing through it
9How does Shiny Foil reduce energy loss?
- AConduction
- BConvection
- CRadiation
10During the summer, what does the Shiny Foil do?
- AReflects the energy from the sun back keeping the house cool
- BReflects the energy from the home back keeping the house warm
11What is Conduction?
- AThe transfer of kinetic energy between particles
- BThe transfer of heat between particles
12What is Convection?
- AThe expansion of gas when heated making it less dense
- BThe expansion of gas when heated making it more dense
13What is the equation for Density?
- ADensity= mass/volume
- BDensity= temperature/volume
14What is the equation for efficiency?
- AEfficiency= useful energy output (x100%) / total energy input
- BEfficiency= useful energy output (x100%) / time taken
15How do you calculate Payback Time?
- APayback time= cost of insulation/ annual saving
- BPayback time= cost of insulation/ amount used
Informationen
- Beschreibung
- GCSE Physics Quiz am Keeping Homes Warm, erstellt von emmcharlotte_x am 16/04/2015.
- Autor
- emmcharlotte_x
- Sprache
- English
- Aufrufe
- 1
- Schlagwörter
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