Five Major Scientific Theories

Five major theories that shape life around us.

Cell Theory

This theory deals with the basic units of life, cells. Discovered by Robert Hooke.

Theory of Special Relativity

This is the theory that has popular equation E = mc^2. Discovered by Albert Einstein.

Theory of Gravity

A physical law that describes gravitational attraction between mass. Discovered by Isaac Newton.

Theory of General Relativity

Combines Special Relativity and Gravity, creating a more accurate description of gravity. Discovered by Albert Einstein.

Theory of Evolution

Describes the process in which inherited traits are passed down, where the genes can mutate, affecting the organism’s chance of survival and breeding.

These are 5 major theories that shape life around us.

Definition of a Scientific Theory: “The summarization of a hypothesis/many hypotheses with evidence to support it, including many successful tests, with no contradictory results.”

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4 Responses to “Five Major Scientific Theories”
  1. Robert Blacklock Says...

    On December 7, 2009 at 1:48 pm

    I view a scientific theory as a model, an explanation of natural phenomena, for which there is sufficient evidence in the form of reproducible observations and/or experimental results to counter all other models or explanations. Theories are not “discovered”, but rather they are formulated, tested, and modified as new evidence comes to light. I would include the Atomic Theory, the Kinetic-Molecular Theory, the Plate Tectonics Theory, and the Big Bang Theory in the list of major theories that shape or have shaped the world around us. Virtually everything around us has been shaped by one or more branches of science that rely on one or more of these theories in order to function effectively. This fact alone demands that we impart an understanding of and an appreciation for the endeavors of science in general to each other and to our children, even if we are not or do not become scientists ourselves.


  2. Robert Blacklock Says...

    On December 7, 2009 at 1:54 pm

    I view an established scientific theory as a model, an explanation of natural phenomena, for which there is sufficient evidence in the form of reproducible observations and/or experimental results to counter all other models or explanations. I would include the Atomic Theory, the Kinetic-Molecular Theory, the Plate Tectonics Theory, and the Big Bang Theory in the list of “major theories that shape (or have shaped) life – and the world – around us”. Virtually everything around us is the result of formal or informal scientific endeavor. This fact alone should be enough to urge us to educate ourselves and our children to understand and appreciate science, even if we are not, and/or our children do not become, scientists.


  3. ch2831 Says...

    On March 4, 2011 at 4:13 am

    Are there any more MAJOR laws in the physics background?


  4. J. Says...

    On July 9, 2011 at 4:56 pm

    This list is far too inexperienced: gravity and both relativity theories can be surmised as simply the theory of relativity because it explains our basic model of the universe on a macro scale, leaving two more slots. Infact, most ‘major’ scientific theory lists should begin and end with physics, especially quantum physics. For that matter, the theory of quantum electrodynamics should be on here, as should Godel’s theorems.


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