Basic Physics By (Hyunji Park)

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Across
  1. 4. nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei
  2. 5. electrical machine that converts electrical energy into mechanical energy
  3. 8. material or object that produces a magnetic field
  4. 9. increase in the wavelength, and corresponding decrease in the frequency and photon energy, of electromagnetic radiation (such as light)
  5. 12. natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another
  6. 13. minor planets, especially of the inner Solar System
  7. 16. gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly
  8. 19. This is my name
  9. 20. dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune
  10. 21. fifth planet from the Sun and the largest in the Solar System
Down
  1. 1. type of magnet in which the magnetic field is produced by an electric current
  2. 2. It has an electrical conductivity value falling between that of a conductor, such as metallic copper, and an insulator, such as glass
  3. 3. My teacher calls himself
  4. 6. electrically neutral group of two or more atoms held together by chemical bonds
  5. 7. a type of elementary particle and a fundamental constituent of matter
  6. 10. unknown form of energy that affects the universe on the largest scales
  7. 11. independent agency of the U.S. federal government responsible for the civilian space program, as well as aeronautics and space research
  8. 12. gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter
  9. 14. region of spacetime where gravity is so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it
  10. 15. the smallest unit of ordinary matter that forms a chemical element
  11. 17. Earth's only proper natural satellite
  12. 18. effort to explain what happened at the very beginning of our universe. Discoveries in astronomy and physics have shown beyond a reasonable doubt that our universe did in fact have a beginning