WHAT IS SCIENCE
Science is the human effort to understand (or to better understand) the natural world using observable physical evidence. It is done through observation of natural phenomena or through experimentation that tries to simulate natural processes under controlled conditions.
Here’s an example of observational science - An ecologist observing the territorial behaviors of bluebirds and a geologist examining the distribution of fossils in an outcrop are both scientists making observations in order to find patterns in natural phenomena.
Other than observational science, there is also experimental science - A chemist observing the rates of one chemical reaction at a variety of temperatures and a nuclear physicist recording the results of bombardment of a particular kind of matter with neutrons are both scientists performing experiments to see what consistent patterns emerge.
All these people are making and recording observations of nature, or of simulations of nature, in order to learn more about how nature, in the broadest sense, works.