What are the 100 Branches of Science?

There are many different branches of science. However, some branches of science could be considered a subset of other branches of science. For instance, environmental science is a subset of biology. 

This means that each of these branches is a subset of a larger branch, which makes each of these branches a part of a much larger science. That said, this article answers the question “what are the 100 branches of science?”

What are the 100 Branches of Science?

The 100 branches of science are the following:

  • Acoustics – the study of sound
  • Aerobiology – the study of airborne organisms
  • Aerodynamics – the study of dynamics of gases
  • Aeronautics – the study of navigation through space
  • Anatomy – the study of body structure
  • Andrology – the study of the physiology of men
  • Anthropology – the study of culture
  • Archaeology – the study of human artifacts
  • Astronomy – the study of celestial bodies and phenomena
  • Audiology – the study of hearing
  • Bacteriology – the study of bacteria
  • Biology – the study of life
  • Biochemistry – the study of chemical processes within living organisms
  • Botany – the study of plants
  • Cardiology – the study of heart
  • Cartography – the study of making maps and globes
  • Chemistry – the study of properties and behaviors of matter
  • Chromatics – the study of color
  • Cosmology – the study of the universe
  • Climatology – the study of climate
  • Criminology – the study of crime and criminals
  • Cytology – the study of living cells
  • Dactylography – the study of fingerprints
  • Demography – the study of population
  • Dermatology – the study of skin
  • Dynamics – the study of forces and motion
  • Ecology – the study of environment
  • Economics – the study of the economy
  • Electrochemistry – the study of electricity and chemicals
  • Electrodynamics – the study of  interactions of electric currents
  • Electrology – the study of electricity
  • Embryology – the study of embryos
  • Endocrinology – the study of glands
  • Entomology – the study of insects
  • Enzymology – the study of enzymes
  • Epistemology- the study of grounds of knowledge
  • Ethnology – the study of cultures
  • Etymology – the study of origins of words
  • Felinology – the study of felines
  • Forestry – the study of forests
  • Gastroenterology – the study of the digestive system
  • Genetics – the study of genes
  • Geography – the study of  surface of the earth
  • Geology – the study of the rocks of a planet
  • Geometry – the study of sizes, shapes, angles, and dimensions
  • Graphology – the study of handwriting
  • Gynecology – the study of the physiology of women
  • Hematology – the study of blood
  • Heredity – the study of traits from parents to offspring
  • Herpetology – the study of reptiles and amphibians
  • Histology – the study of tissues and organs
  • Horticulture – the study of gardening
  • Hydrodynamics – the study of movement in liquids
  • Ichthyology – the study of fish
  • Immunology – the study of the immune system
  • Linguistics – the study of language
  • Mammalogy – the study of mammals
  • Mathematics  – the study of numbers
  • Metaphysics – the study of principles of nature and thought
  • Meteorology – the study of weather
  • Morphology – the study of forms and the development of structures
  • Neonatology – the study of infants
  • Neurology – the study of the nervous system
  • Oceanography – the study of ocean
  • Oncology – the study of tumors
  • Optics – the study of light
  • Osteology – the study of  bones
  • Paleontology – the study of fossils
  • Parasitology – the study of parasites
  • Pathology – the study of diseases
  • Pharmacology – the study of drugs
  • Phenomenology – the study of phenomena
  • Philosophy – the study of knowledge and wisdom
  • Phonology – the study of speech sounds
  • Physics – the study of matter with regards to energy and force
  • Physiology – the study of processes of life
  • Primatology – the study of primates
  • Psychology – the study of mind and behavior
  • Radiobiology – the study of ionizing radiation in living matter
  • Radiochemistry – the study of chemical reactions under radioactive circumstances
  • Radiology – the study of  X-rays and their medical applications
  • Reflexology – the study of reflexes
  • Rhinology – the study of the nose
  • Sociology – the study of society
  • Statics – the study of bodies and forces in equilibrium
  • Syntax – the study of the structure of a sentence
  • Systematics – the study of diversifying organisms
  • Taxonomy – the study of the classification of organisms
  • Tempestology – the study of hurricanes and tropical cyclones
  • Thermodynamics – the study of heat in relation to motion
  • Tonetics – the study of pronunciation
  • Topography – the study of features and shape of land surfaces
  • Toxicology – the study of poison
  • Urbanology – the study of cities
  • Urology – the study of the urinary tract
  • Virology – the study of virus
  • Volcanology – the study of volcanoes
  • Xylology – the study of wood
  • Zoology – the study of animals
  • Zoopathology – the study of animal diseases

What is Science?

Science is the broad, systematic, and empirical study of the natural world. It is a process that involves observation, research, and testing to build knowledge about the world. 

The scientific method is a process for investigating phenomena, acquiring new knowledge and understanding, or correcting and integrating previous knowledge. Science uses empirical evidence to formulate new theories and test them through experimentation.

How is science different from other fields?

Science is different from other fields because it studies the natural world, and it uses the scientific method to do so. The scientific method is a systematic, empirical, and experimental approach to the generation of knowledge. 

It seeks the most probable explanation for a phenomenon, using the scientific method to eliminate other possible explanations. Scientists use the scientific method to ask questions, gather data, and form hypotheses. The process of observation, measurement, research, and testing is repeated until the hypothesis can be proven to be correct.

Why is science important?

Science is important because it gives us the ability to learn about our world and how it works. It allows us to understand that everything has a purpose and that there is always a way to solve problems. 

It helps us to understand how things work and what can be done to make them better. Science helps us to make better decisions and helps us see the world from a different perspective.

Science is also important because it helps to protect the environment and our planet. It’s important to know that science is not a one-way street. Scientists have to constantly learn and improve their skills in order to continue making discoveries.

What is the scientific method?

The scientific method is a systematic way of acquiring new knowledge, or of revising and extending existing knowledge, through observation, experiment, and measurement. 

It is a process that involves the formulation of testable hypotheses, and the execution of tests based on these hypotheses. It is a process that has 5 steps:

  1. Observation
  2. Hypothesis
  3. Experiment
  4. Conclusion
  5. Report


Science is a fascinating field that is constantly evolving. There are so many different fields and sub-fields in science that it’s hard to keep up with it all. For example, there are three different types of science: natural sciences, life sciences, and social sciences. These three types of science all have their own specialties and different ways of doing things. There are also many different areas of science that have to do with the physical world. These areas include chemistry, physics, geology, biology, and astronomy. Science is a fascinating field with so many possibilities that it’s hard to keep up with it all.

Frequently Asked Questions (FAQs): What are the 100 Branches of Science?

Are there any limitations to scientific knowledge?

Science, as we know it, is constantly changing and evolving. There are some limitations to scientific knowledge, but these limitations are not insurmountable. For example, Newton’s law of gravity is a scientific law that has been proven to be accurate for every situation in which it has been tested. However, there are some situations where Newton’s law cannot be applied, such as when the object is traveling faster than the speed of light. Despite these limitations, science is an ever-growing and changing field that will continue to provide new discoveries.

What is the difference between science and pseudoscience?

science is the study of the natural world through observation, experimentation, and rational analysis. On the other hand, pseudoscience often relies on anecdotal evidence and personal experience to make conclusions about the world. Pseudoscience usually has no experimental evidence to support its conclusions.

How did science change in the last 100 years?

Science has made huge leaps and bounds in the last 100 years. Humans have been able to make scientific discoveries that were previously impossible to do. This can be seen in the invention of the electron microscope, which allowed scientists to see bacteria and viruses for the first time. Scientists are also able to learn about what happens when things are done in a lab and then apply it to real life, as seen with the discovery of antibiotics. The advances in science have also allowed humans to know more about the human body and how it works, which has led to many diseases being cured.


Chalmers, A. F. (2013). What is this thing called science?. Hackett Publishing.

37 Branches of Geology – Earth How. Retrieved from https://earthhow.com/branches-of-geology/ 

Branches of Science – Science Struck. Retrieved July from https://sciencestruck.com/branches-of-science

Different Branches of Biology – Biology Wise. Retrieved from https://biologywise.com/different-branches-of-biology