Across
- 6. A naturally occurring, colorless and odorless radioactive gas that can accumulate in buildings.
- 7. A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge.
- 9. General Knowledge: The American theoretical physicist who directed the Manhattan Project and is famously known as the "father of the atomic bomb".
- 10. A device that uses a powerful magnetic field to confine plasma in the shape of a torus (donut shape) for fusion energy.
Down
- 1. A negatively charged subatomic particle that orbits the nucleus of an atom.
- 2. The nuclear process that powers the sun, combining lighter atomic nuclei to form a heavier one.
- 3. A heavy, radioactive metal commonly used as primary fuel in nuclear fission reactors.
- 4. Variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.
- 5. General Knowledge / Science: The chemical element heavily used as a moderator in early nuclear reactors (often in the form of graphite).
- 8. The spontaneous process by which an unstable atomic nucleus loses energy by emitting radiation.