Food tech - Heat transfer

Question 1

3 types of heat tranfer

Answer 1

1. conduction
2. convection
3. radiation

Question 2

conduction

Answer 2

• transfer of heat through touching
• occurs in solids
• transfers heat from the warmer part of an object to the cooler part of the same object
• ## can be transfers heat from a hotter object to a cooler objecteg. metal spoon touching the side of a hot pot

Question 3

convection

Answer 3

• occurs in liquids and gases
• transfer of heat through the movement of particles
• ## warm particles rise, cool particles fill space beloweg. boiling water

Question 4

radiation

Answer 4

• transfer of energy as waves
• ## travels through matter / empty spaceeg heat from fire