( ( Internal Energy ) ( ( is ( ( the ( total ( kinetic energy ) ) ) ( of ( ( all ( the ( ( atoms and ) molecules ) ) ) ( inside ( an object ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Internal) (NNP Energy)) (VP (VBZ is) (NP (NP (DT the) (JJ total) (JJ kinetic) (NN energy)) (PP (IN of) (NP (NP (PDT all) (DT the) (NNS atoms) (CC and) (NNS molecules)) (PP (IN inside) (NP (DT an) (NN object))))))) (. .)))
Internal Energy is the total kinetic energy of all the atoms and molecules inside an object.
(ROOT (S (NP (JJ Thermal) (NN energy)) (VP (VBZ constitutes) (NP (NP (DT the) (JJ total) (JJ kinetic) (NN energy)) (PP (IN of) (NP (PDT all) (DT the) (NNS atoms) (SBAR (WHNP (WDT that)) (S (VP (VBP make) (PRT (RP up)) (NP (DT an) (NN object))))))))) (. .)))