Exercise 3: Sound Pathway Write out the pathway of sound waves entering from the external ear through the ossicles and
as they continue as pressure waves to the organ of Corti in the inner ear. (List all the structures,
layers, cavities, and fluid the light must pass through)

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.

the answer is definitely a