Science attempts to describe the physical world (it answers the question “How?”, not “Why?”). The Scientific Method provides a prescription for arriving at theories that describe the physical world an...Science attempts to describe the physical world (it answers the question “How?”, not “Why?”). The Scientific Method provides a prescription for arriving at theories that describe the physical world and that can be experimentally verified. Classical physics encompasses the theories developed before 1905, when Einstein introduced the need for Quantum Mechanics and the Theorie(s) of Relativity. One of the main goals of physics is to arrive at a single theory that describes all of our natural world.