Water Changes State Practice Test

A model of the water cycle shows an icy mountain with a stream flowing downhill. A label says “melting” with an arrow from snow/ice (solid) into the stream (liquid). A sun icon next to the mountain indicates heating (energy input). Which state change is shown, and what does the energy change indicate?

Remember: state changes in the water cycle are physical changes, not chemical changes (no new substance forms).

A student reads a labeled water-cycle model: “evaporation” is shown as liquid water changing to water vapor (gas) above a warm field, with a heating icon. The student claims: “Evaporation only happens when water is boiling.” Which claim is supported by the model?

State changes are physical changes, not chemical changes.