cryogenics
The phenomenon is called the Hawthorne effect. It occurs when individuals modify their behavior or performance in response to being observed as part of a study, regardless of the actual intervention being studied.
Criminology (from Latin crīmen, "accusation"; and Greek -λογία, -logia) is the social science approach to the study of crime as an individual and social phenomenon.
Scientists who study rainbows are called atmospheric scientists or optical physicists. They study the physics behind the formation and properties of rainbows, including how light is refracted, reflected, and dispersed in the atmosphere to create this colorful phenomenon.
Phantomology is the study of the supernatural and/or supernatural phenomenon.
The natural phenomenon that seismology studies earthquakes. Seismology also studies seismic waves that move though the Earth. Seismic waves result from earthquakes.
It depends on what kind of scientist it is. For example, botanists study plants.
gravity
Tornadoes are a natural phenomenon. They are the subject of scientific study.
Biological evolution is a natural phenomenon. Scientific disciplines that study this phenomenon include: developmental biology, evolutionary biology, palaeontology, comparative genomics, microbiology, and so on, and so forth.
???????????????????????
The phenomenon of sound bouncing off walls is called "reverberation."
cryogenics