conduction, convection, radiation

Question 1

insulator

Answer 1

a material which does not allow the flow of energy easily

Question 2

conduction

Answer 2

when fast moving particles collide with slower moving particles next to them, this gives them more energy and they vibrate faster.

they collide easily because solids’ particles are close together. more frequent collisions=higher rate of transfer

Question 3

thermal conductivity

Answer 3

a measure of how well a material conducts energy when heated

higher this is = higher rate of energy transfer through it

Question 4

temperature definition

Answer 4

a measure of average kinetic energy of the molecules

Question 5

change in thermal energy equation

Answer 5

change in thermal energy = mass x specific heat capacity x temperature change

Question 6

specific heat capacity equation

Answer 6

energy transferred =
mass x spec. heat capacity x change in temp

Question 7

convection is the transfer of _____ through a ______

_____ is transferred through _____ of moving ______

Answer 7

transfer of heat through a heated fluid
heat is transferred through currents of moving gas / fluid

Question 8

convection currents formation

Answer 8

fluids near the heat source gain energy, become less dense then rise.

Question 9

radiation

Answer 9

transfer of heat through rays, waves or particles.