Hypothesis
A hypothesis is a tentative explanation for an observation. It is tested by gathering more information to see if the explanation holds up. If not, a new hypothesis is made and tested. Note that hypotheses (and theories) can never be proven, only disproven.
If a hypothesis is well-supported, it may be upgraded to a theory. However, no matter how long a hypothesis has been around; no matter how many people believe it; no matter what the prevailing consensus is, just one piece of evidence can destroy the hypothesis.
Theory
Theory.
Theory
Basically and simply. All hypotheses and theories must be falsifiable in principle. For instance, the fact of evolution as well as the theory that explains mich of it could be falsified if rabbits were found in Precambrian strata.
A scientific theory is a well tested concept that explains a wide range of observations.
If by "why" you mean "what," a well tested framework that explains a wide range of observations in science is called a theory.
It is a scientific theory.
Archimedes' Principle
Refraction
Archimedes' principle is the statement that says buoyancy exists, and explains how to calculate its magnitude. The principle is applied extensively in the maritime shipping and hot-air balooning industries.
Density. Soda is denser than fresh water and can support an egg.
Bernoulli's principle
false >Archimedes' principle does<
Because of Pascal's principle
It shows how a person explains the behavior of someone else.
The branch of psychology that explains the underlying principles of human behavior is cognitive psychology. This field focuses on how individuals perceive, think, and solve problems, providing insights into the processes that govern our actions and decisions.
induction
Pascal's principle
Theory