( ( ( Conduction ( ( The flow ) ( of heat ) ) ) ( by conduction ) ) ( ( ( occurs ( via ( collisions ( between ( ( atoms and ) molecules ) ) ) ) ) ( in ( ( the ( ( substance and ) ( the ( subsequent transfer ) ) ) ) ( of ( kinetic energy ) ) ) ) ) . ) )
(ROOT (S (S (VP (VBN Conduction) (NP (NP (DT The) (NN flow)) (PP (IN of) (NP (NN heat)))) (PP (IN by) (NP (NN conduction))))) (VP (VBZ occurs) (PP (IN via) (NP (NP (NNS collisions)) (PP (IN between) (NP (NNS atoms) (CC and) (NNS molecules))))) (PP (IN in) (NP (NP (DT the) (NX (NX (NN substance)) (CC and) (NX (DT the) (JJ subsequent) (NN transfer)))) (PP (IN of) (NP (JJ kinetic) (NN energy)))))) (. .)))
Conduction The flow of heat by conduction occurs via collisions between atoms and molecules in the substance and the subsequent transfer of kinetic energy.
(ROOT (S (NP (NP (NNP Heat) (NN transfer)) (PP (IN by) (NP (NN conduction)))) (VP (VBZ occurs) (S (NP (NNS molecules)) (VP (VB collide) (PP (IN with) (NP (JJ other) (NNS molecules)))))) (. .)))
Heat transfer by conduction occurs molecules collide with other molecules.