energy transfers Flashcards
1
Q
conduction exam answer to do with preventing heat loss
A
air is a bad conductor therefore reduces conduction
blanket is a good insulator therefore reduces conduction
2
Q
how can energy be transferred
A
mechanically
electrically
heating
radiation
3
Q
exam answer due to convection
A
air is trapped
therefore convection currrents are therefore reduced.
4
Q
exam answer due to radiation
A
aluminium is a poor emitter/absorber of radiation
5
Q
solar power adv and disadv
A
can be built on exisitng building
no energy at night
large areas of panels needed
dont emit greenhouse
6
Q
adv and disadv of wind
A
;arge site needed
eye sore
not always windy
destroy habitat
