Question

Rahul sees a flock of birds. He watches as the flying birds land in neat little rows on several power lines. Which change of state does the motion of the birds most closely model?

melting
vaporization
deposition
sublimation

Answer 1

The motion of the birds landing in neat little rows on the power lines most closely models **deposition**.

In this context, deposition refers to the process where a substance transitions from a gas directly to a solid without passing through a liquid phase. The birds flying and then settling into organized rows can be seen as a transition from a more chaotic and dispersed state (akin to gas) to a more orderly and structured state (similar to solid).