Answer :

Gibbs
The scientific method is an empirical tool that can be used to study phenomenon by asking questions, conducting experiments, and making observations to prove or disprove hypotheses. The scientific method has been used as a baseline tool in hard and social sciences to conduct experiments and to make conclusions about phenomenon in our natural world. 
scientific method is a method that has characterized natural science ,consisting of systematic observation, measurement, experimentation,  the formulating of a hypothesis(educated guess) , and testing