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Science is such a broad topic that it is broken down into disciplines or branches based on the particular area of study. Learn about the different branches of science from these introductions. Then, get more detailed information about each science.
Introduction to BiologyKeith Weller, USDA Agricultural Research Service
Biology is the science that deals with the study of life and how living organisms work. Biologists study all forms of life, from the smallest bacterium to the mighty blue whale. Biology looks at the characteristics of life and how life changes over time.
Introduction to ChemistryNicholas Rigg, Getty Images
Chemistry is the study of matter and the different ways matter and energy interacts with each other. The study of chemistry involves learning about the elements, molecules, and chemical reactions.
Introduction to PhysicsAndy Sotiriou, Getty Images
The definitions for physics and chemistry are pretty much the same. Physics is the study of matter and energy and the relationships between them. Physics and chemistry are called the 'physical sciences'. Sometimes physics is considered to be the science of how things work.
Introduction to GeologyCaiaimage/Rana Dias / Getty Images
Geology is the study of the Earth. Geologists study what the earth is made of and how it was formed. Some people consider geology to be the study of rocks and minerals… and it is, but there is much more to it than that.
Introduction to AstronomyStocktrek / Getty Images
While geology is the study of everything having to do with the Earth, astronomy is the study of everything else! Astronomers study planets other than earth, stars, galaxies, black holes… the whole universe.