Data Collection (From Video) Volume of Sediment
Porosity (%)
Name of
Sediment
Amount of Water
Poured (ml)
Particle
Diameter (cm)
(from ESRT
pg. 7)
Gravel
N/A
39ml
Sand
41ml
Clay
I
50ml
Silt
N/A
N/A
N/A

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.