Radioactivity & Radiation Crossword

This printable crossword puzzle on the topic of Physics has 12 clues. Answers range from 3 to 10 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

What is it called when atoms change due to instability?
The type of radiation where a Helium nucleus is emitted
The type of radiation where an electron is emitted
The type of radiation where high-energy electromagnetic waves are emitted
The term for the time taken for half of the radioactive sample decays
The name of the instrument used for detecting and measuring ionizing radiation
The name of a famous scientist that discovered x-rays
The city where one of the worst nuclear accidents happened in 1986
The name of the basic unit of a chemical element
Elements that have differing numbers of neutrons are called...
Naturally occuring material where radioactive elements can be found
A metal that is commonly used for its radioactive properties