Elephants can often be observed using their trunks to spray water over their bodies, which cools them. What type of heat exchange does this process promote?

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This process promotes evaporation. When elephants spray water over their bodies, the water absorbs heat from their skin as it evaporates, effectively cooling the elephants down. This is a classic example of evaporative cooling, a process that relies on the phase change of water from liquid to vapor to remove heat.

Elephants Can Often Be Observed Using Their Trunks to Spray