Physical science is an encompassing term for the branches of natural science, and science (generally), that study non-living systems, in contrast to the biological sciences. However, the term "physical" creates an unintended, somewhat arbitrary distinction, since many branches of physical science also study biological phenomena. The physical sciences and key concepts include:

  1. Astronomy, the study of the universe beyond the atmosphere of the Earth.
  2. Chemistry, the science dealing with the composition of substances, their interactions with energy and each other.
  3. Geology, the study of the planetary structure of Earth and the physical processes which shape it.
  4. Hydrology, the study of the movement and distribution of water across the Earth's surface.
  5. Meteorology, the study of weather patterns and other atmospheric phenomena.
  6. Oceanography, the study of the ocean as a physical system
  7. Physics, the quantitative science dealing with matter and energy.
  8. The foundations of the physical sciences rest upon key concepts and theories, each of which explains and/or models a particular aspect of the behavior of nature.
  9. As in other sciences, these key concepts and theories came to discovery using the scientific method.
  10. Natural sciences generally, and physical sciences particularly, tend to be more reductionism sciences, in contrast to the more holistic social sciences; i.e., physical science tends to explain the whole system from the system's fundamental parts, whereas social science tends to explain the whole system as more than the mere sum of its fundamental parts.
  11. The key concepts and theories of physical science are taught from early childhood and provide the grounding for our common-sensical understanding of the universe.