Chapter 2 Outline
SCIENCE, MATTER, ENERGY, AND SYSTEMS p.28-49 Core Case Study ? Carrying Out a Controlled Scientific Experiment o controlled experiment- a way in which scientists learn about how nature works is to conduct a controlled experiment o variables- factors that can change within a system or situation being studied o single-variable analysis- an experiment designed to isolate and study the effects of one variable at a time o experimental group- a chosen variable is changed in a known way o control group- the chosen variable is not changed 2-1 What Is Science p.29-35 ? Science Is a Search for Order in Nature o science- an endeavor to discover how nature works and to use that knowledge to make predictions