convection
Definitions
The transfer of heat through a fluid (liquid or gas) caused by the movement of the fluid itself
对流（热量随流体本身的流动而传递）
Root Breakdown
Root-derivedcon- (together) + vect (carry) + -ion (process) = the process of heat being carried along together by a moving fluid. Unlike conduction (heat passed through still material), convection needs flow: warm air or water rises, circulates, and transports its heat as it moves.
Root vect still carries 5 more wordsCommon Collocations
- 1.heat convection热对流
- 2.convection current对流（环流）
- 3.convection oven对流烤箱
- 4.atmospheric convection大气对流
Example Sentences
- 1.
Convection carries warm air upward, creating thunderstorms.
- 2.
A convection oven cooks food faster by circulating hot air.
- 3.
The lava lamp works by convection in the heated liquid.
Easily Confused
convection vs conduction — Both move heat, but convection needs a moving fluid that physically carries the heat (boiling water, rising air); conduction passes heat through still matter by direct contact (a metal spoon heating up). Movement of the medium → convection.