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A _____ ray is a high energy electromagnetic wave emitted by the nucleus to get rid of excess energy.
A gamma ___ is a high energy electromagnetic wave emitted by the nucleus to get rid of excess energy.
To _________ something means to go through it.
___________ decay is when a nucleus becomes more stable by emitting energy.
Radioactive _____ is when a nucleus becomes more stable by emitting energy.
If something is ________ it is more likely to collapse.
An ___ is formed when an atom or a group of atoms gains or loses and electron.
_________ refers to how many waves pass a set point per second.
If a substance is ________, it means it causes ionisation.
The formation of ions is called __________.
A _____________ tube is used to detect ionising radiation.
A Geiger-Muller ____ is used to detect ionising radiation.
The time taken for the count-rate to fall to half its original level is called the _________.
_____________ is when unwanted radioactive atoms are present.
