Question

when water is left undisturbed a curve appears called_____​

Answer 1

The answer of your question is-

When water is left undisturbed a curve appears called  lower meniscus or concave meniscus.

Answer 2

Answer:

Plateaus

Step-by-step explanation:

Changes of state occur during plateaus because the temperature is constant. The change of state behavior of all substances can be represented with a heating curve of this type.