What are the three main divisions of physical science?

The three main divisions of physical science are chemistry, physics, and Earth science. Chemistry focuses on the composition, structure, and properties of substances along with the changes they undergo during chemical reactions. Physics investigates the fundamental principles governing the behavior of matter and energy, exploring concepts such as motion, force, and energy. Earth science encompasses various disciplines that study the Earth and its processes, including geology and meteorology.

These three branches are interrelated, providing a comprehensive understanding of the natural world through the lens of physical processes. The inclusion of biology in other choices illustrates the life sciences rather than physical science, while fields like meteorology, though important, do not constitute a core division of physical science in the same way that chemistry, physics, and Earth science do.