Heat Transfer- Key Words

Question 1

absorb

Answer 1

to take in energy

Question 2

condense

Answer 2

gas turns to liquid

Question 3

conduction

Answer 3

the way heat travels through solids

Question 4

conductor

Answer 4

a material which lets energy flow through it easily

Question 5

contract

Answer 5

get smaller

Question 6

convection current

Answer 6

a current created by heat causing changes in the density of a fluid

Question 7

emit

Answer 7

to give out energy

Question 8

evaporate

Answer 8

liquid turns into a gas

Question 9

expand

Answer 9

get bigger

Question 10

fluid

Answer 10

a gas of liquid

Question 11

gas

Answer 11

particles that are spread out and not attached to each other

Question 12

heat insulator

Answer 12

material that does not let heat energy flow through it easily

Question 13

infrared radiation

Answer 13

a wave that can travel through transparent things and a vacuum (empty space)

Question 14

insulator

Answer 14

a material which does not let energy flow through it easily

Question 15

joules (J)

Answer 15

the units for measuring energy

Question 16

liquid

Answer 16

something made of particles that are touching each other in an irregular array, but can move past each other

Question 17

melt

Answer 17

when a solid turns into a liquid

Question 18

radiation

Answer 18

the transfer of heat energy by electromagnetic waves

Question 19

solid

Answer 19

made of particles that are close together in a regular array, but can’t move past each other

Question 20

heat energy

Answer 20

thermal energy