The document outlines 9 main branches of physics: Mechanics, Electricity, Electromagnetism, Solid-State Physics, Atomic Physics, Nuclear Physics, Plasma Physics, Biophysics, and Astrophysics. Each branch deals with a different subject area related to motion, electricity, atomic structures, astronomy, and other physics phenomena. The document also lists some additional minor branches such as low temperature physics, particle physics, optics, and acoustics.