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

Deposition.

Flying birds (disordered, like a gas) settling into neat rows on the wires (ordered, like a solid) models a gas-to-solid change of state, which is deposition.