Across
- 1. Electromagnetic radiation usually produced in transitions of the inner electrons of atoms
- 4. Unit of energy, equivalent to the work done in lifting a one-newton weight a distance of one meter
- 8. Electromagnetic radiation with wavelength intermediate between radio wave and infrared radiation
- 11. the ratio of the strength with which electromagnetism (for example, sunlight) affects charged particles, like electrons or protons
- 13. the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes.
- 15. A particle with zero charge found in the nucleus
- 20. force that occurs between electrically charged particles
- 21. the branch of physics that studies atomic nuclei and their constituents and interactions the branch of physics that studies atomic nuclei and their constituents and interactions
- 22. Unit of temperature equal in size to the Celsius degree, but with the zero set by the absolute zero of temperature
- 24. one of the very small parts of matter (as a molecule, atom, or electron)
- 26. The process by which an atom nucleus is split releasing energy
Down
- 2. the small, dense region consisting of protons and neutrons at the center of an atom
- 3. two light nuclei merge to form a single heavier nucleus
- 5. amount of energy required to separate a particle from a system of particles or to disperse all the particles of the system
- 6. a quantity or phenomenon that has two independent properties: magnitude and direction
- 7. The change of one radioactive nuclide into a different nuclide by the spontaneous emission of radiation such as alpha, beta, or gamma rays, or by electron capture
- 9. discovered the atomic nucleus, using a "scattering" experiment
- 10. number represents the total number of protons and neutrons in a atomic nucleus
- 12. Device used to increase the energy of particles, which then collide with other particles
- 14. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
- 16. Any species of atom that exists for a measurable length of time
- 17. a penetrating form of electromagnetic radiation arising from the radioactive decay of atomic nuclei, It consists of the shortest wavelength electromagnetic waves, typically shorter than those of X-rays
- 18. the minimum amount of any physical entity (physical property) involved in an interaction
- 19. was the first military target of a nuclear weapon in human history
- 23. An atomic particle that is electrically charged, either negatively or positively
- 24. a tiny particle that comprises waves of electromagnetic radiation
- 25. Two or more atoms of an element that have the same number of protons but different number of neutrons in their nuclei