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Physical science is the study of physics and chemistry of nature. From the materialist and functionalist viewpoints it overlaps the life sciences where ecology studies the evidences of historical facts or evolution. Natural sciences bridge the phenomena in the physical sciences to the noumenon in the life sciences. The following is presented as an overview and topical guide of these physical sciences.
The foundations of the physical sciences rests upon key concepts and theories, each of which explains and/or models a particular aspect of the behavior of nature.
Physics is with Mathematics and Chemistry one of the "fundamental science" because the other natural sciences (biology, geology, etc.) deal with systems that obey the laws of physics. The physical laws of matter, energy, and the forces of nature govern the interactions between particles (such as molecules, atoms, or subatomic particles). Some basic parts of physics are:
(Note: Astronomy should not be confused with astrology, which assumes that people's destiny and human affairs in general are correlated to the apparent positions of astronomical objects in the sky -- although the two fields share a common origin, they are quite different; astronomers embrace the scientific method, while astrologers do not.)
Chemistry, built upon concepts from physics, addresses phenomena associated with the structure, composition and energetics of matter as well as the changes it undergoes. Often known as the central science, chemistry connects the fundamental laws of physics to engineering and other natural sciences such as biology, earth science, astronomy and material science
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