- CK-12 Physical Science Flexbook: This online textbook from CK-12 Foundation covers all the topics typically included in an 8th grade physical science course, including matter, motion, forces, energy, waves, electricity, and magnetism. The book is available for free online and can be viewed in your browser or downloaded as a PDF.
- OpenStax Physical Science: This online textbook from OpenStax is designed for high school students and covers the same topics as CK-12 Physical Science Flexbook. It is also available for free online and can be viewed in your browser or downloaded as a PDF.
- PhET Interactive Simulations: This website from the University of Colorado Boulder provides a variety of interactive simulations that can be used to explore physical science concepts. The simulations are free to use and can be accessed from any computer or device with an internet connection.
In addition to these online textbooks and simulations, there are many other resources available to help you learn about physical science. You can find textbooks, articles, videos, and other materials at your local library, school, or online.