Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Optics explains the behavior of visible light and electromagnetic waves.
What type of physics explains the behavior of visible light and electromagnetic waves?

Temperature and sky conditions are both used to describe weather.
Which two observations are both used to describe weather?

Noninfectious disease is the term for a disease that is not contagious.
What is the term for a disease that is not contagious?