During their lifetimes, stars generate energy from nuclear fusion reactions that create successively heavier chemical elements. Some stars explode at the end of their lives, and the heavy elements they have created are blasted out into space to form the next generation of stars and planets. Explore the impact of scientific knowledge and discoveries on personal and community health. Recognize how science influences human population growth, use science to analyze the use of natural resources by an increasing human population. P-4 Examine the role science plays in everyday life.
Science is a human endeavor.
Scientists formulate and test their explanations of nature using observations, experiments, and theoretical and mathematical models.