Lab report on absorption and radiation by land and water

I can conclude that the type of material affects the absorption of sunlight on Earth's surface because different materials absorb heat from sunlight at different rates. The results support my hypothesis because the results show that air absorbs heat faster than any of the materials. Soil absorbs heat faster than sand, which absorbs heat faster than water.Explanation:

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.