1. The girl was studying when her father came in.
2. The annoyed businessman went straight to his study when he got home.
The word hematology refers to the study of blood.
i was bored i suddently had a compulsion to study
She went to study dermatology at the university.
If you mean Seismology, this is the study of earthquakes.
This sentence is using the word "pantology".
I plan to study physiology in college.
The noise was so clamoring I could not study.
i always doting my children for study.
Botany is the study of the physical structure of plants
I use index cards to study my vocabulary.
I like to study about the inside of a spaceship, and how its built.
You would use the word "astrophysics" in a sentence in the role of an abstract noun. For example, "Astrophysics is the study of the physics of the universe."