conduction, convection radiation exam question

CONDUCTION

• cat x gives out more energy through conduction

• fur is an insulator, so is a poor conductor of heat

• fur traps air, air is a poor conductor of heat

• cat y has fur, cat x does not

CONVECTION

• cat x transfers more energy through convection

• convection = hot air rising. fur traps air, so it cannot rise, and not create a convection current

RADIATION

• Cat y is gives out more energy through IR radiation

• black is the best emitter of IR Radiation, cat has black fur

• cat x is light, this reflects IR radiation, and is a poor emitter

• cat x has bigger ears, therefore is going to give out more infrared radiation