Across
- 4. Radioactive atom with an unstable nucleus.
- 5. The time required for half the amount of radioisotopes to decay.
- 8. The...disaster in Ukraine is the worst nuclear power plant accident ever happened, which released fast spreading radioactive particles.
- 9. d The sun's ultraviolet (UV) radiation causes skin cancer but is also the best source of...
- 10. Shortening word of the worst nuclear meltdown in USA, releasing radioactive gases and iodine.
Down
- 1. The ionizing radiation always around us, natural and artificial, for example air.
- 2. The element used for making nuclear power, used in spacecrafts, submarines and other nuclear-powered vehicles.
- 3. An... radiation is a form of energy travelling through space.
- 6. If a radiation can knock out electrons out of atoms making them ions, the radiation is...
- 7. An electromagnetic wave with high energy & short wavelength which can pass through solids and ionizing gases.