Heat transfer

Question 1

what are the 3 types of heat transfer?

Answer 1

conduction, convection, radiation

Question 2

which method of heat transfer uses electromagnetic waves ?

Answer 2

radiation

Question 3

fill in the blanks : all objects continuously —- and —— this type of radiation

Answer 3

emit and absorb

Question 4

how does temperature difference affect the rate of heat transfer?

Answer 4

the bigger the difference between the 2 temperature the faster the heat transfer.

Question 5

the type of heat transfer that takes place best through solids is called:

Answer 5

conduction

Question 6

define this type of heat transfer (conduction)

Answer 6

the transfer of energy from the more energetic particles to the less energetic particles of a substance due to the interaction of these particles

Question 7

describe how heat is transferred through conduction

Answer 7

through direct contact, where thermal energy is transferred from a hotter region to a cooler region within a substance or between two substances in contact.

Question 8

Define convection

Answer 8

the rising motion of warmer areas of a liquid or gas, and the sinking motion of cooler areas of liquid or gas, sometimes forming a complete cycle.

Question 9

describe how convection heats water

Answer 9

by creating currents as heated water rises and cooler water sinks

Question 10

why does convection not occur in solids?

Answer 10

in solids, the particles cant move as much as liquids and gases so there is not space for convection to happen

Question 11

a blank surface is good at blanking and at blanking infared radiation

Answer 11

dark, absorbing,emitting

Question 12

a blank and blank surface is good at blanking infared radiation but is a poor blanker/blanker

Answer 12

…light,shiny,reflecting,absorber/emitter