With the wrong number of neutrons, nuclei can fall apart. A nucleus will regain stability by emitting alpha or beta particles and then 'cool down' by emitting gamma radiation.
What can significantly reduce gamma radiation?
What form of radiation is emitted by nuclei with too many neutrons?
What is gamma radiation?
An electromagnetic wave
A helium nucleus
Which form of radiation has the highest ionising power?
What is a positron?
An antimatter electron
A fast-moving electron
A - particle
What is the activity of a source that emits 1,200 particles per minute?
Uranium 238 emits an alpha particle to become what nucleus?
What is an alpha particle?
Which type of radiation can reach the furthest?
What fraction of a radioisotope has decayed after two half-lives?
All of it