What is Science?

The word science comes from the Latin "scientia," meaning knowledge. How do we define science? According to Webster's New Collegiate Dictionary, the definition of science is "knowledge attained through study or practice," or "knowledge covering general truths of the operation of general laws, esp. as obtained and tested through scientific method [and] concerned with the physical world." What does that really mean? Science refers to a system of acquiring knowledge. This system uses observation and experimentation to describe and explain natural phenomena. The term science also refers to the organized body of knowledge people have gained using that system. Less formally, the word science often describes any systematic field of study or the knowledge gained from it. What is the purpose of science? Perhaps the most general description is that the purpose of science is to produce useful models of reality. Most scientific investigations use some form of the scientific method. You can find out more about the scientific method here. Science as defined above is sometimes called pure science to differentiate it from applied science, which is the application of research to human needs. Fields of science are commonly classified along two major lines:    - Natural sciences, the study of the natural world, and    - Social sciences, the systematic study of human behavior and society. The Different Fields of Science This is just a partial listing of some of the many, many different possible fields of study within science. Many of the fields listed here overlap to some degree with one or more other areas. Natural Sciences Biology Anatomy Astrobiology Biochemistry Bioinformatics Biophysics Botany Cell biology Developmental biology Ecology Entomology Epidemiology Evolution (Evolutionary biology) Freshwater Biology Genetics Immunology Marine biology Microbiology Molecular Biology Morphology Neuroscience Physical anthropology Physiology Population dynamics Structural biology Taxonomy Toxicology Virology Zoology Chemistry Analytical chemistry Biochemistry Computational chemistry Electrochemistry Inorganic chemistry Materials science Organic chemistry Polymer chemistry Physical chemistry Quantum chemistry Spectroscopy Stereochemistry Thermochemistry Physics Acoustics Astrodynamics Astronomy Astrophysics Biophysics Classical mechanics Computational physics Condensed matter physics Cryogenics Dynamics Fluid dynamics High Energy Physics Materials physics Mechanics Nuclear physics Optics Particle physics Plasma physics Polymer physics Quantum mechanics Solid State physics Thermodynamics Earth Science Environmental Science Geodesy Geography Geology Hydrology Meteorology Oceanography Paleontology Seismology Importaint Links   What is Science? What is science? - Understanding Science Earth Science - Research, Policy and Education‎