1.
The process in which unstable atoms release energy and particles.
2.
Energy that travels through space as waves or particles.
3.
A radioactive form of an element with an unstable nucleus.
4.
The breakdown of an unstable nucleus into a more stable one.
5.
A positively charged particle made of 2 protons and 2 neutrons.
6.
A fast-moving electron or positron emitted from a nucleus.
7.
A high-energy electromagnetic wave released from a nucleus.
8.
The time needed for half of a radioactive sample to decay.
9.
The conversion of one element into another.
10.
An element with an atomic number greater than uranium (92).
11.
The splitting of a large nucleus into smaller nuclei, releasing energy.
12.
The combining of small nuclei to form a larger nucleus, releasing energy.
13.
Radiation with enough energy to remove electrons from atoms.
14.
A device used to detect and measure radiation.
15.
A device that detects radiation using flashes of light.
16.
A badge worn to measure a person’s exposure to radiation.
