Content of the book: The world of physics: 1. Physics - the science of solutions, 2. The achievements of technology, 3. Research methods in physics, 4. Quantities and units, 5. Formulas and graphs, 6. Energy; Sound and light: 7. Sound and hearing, 8. Sounds around us, 9. Light and vision, 10. Lenses and refraction, 11. Mirrors and reflection, 12. Characteristics of wave motion.