P2D GLOSSARY

ALL THE WORDS YOU NEED TO KNOW FOR P2D SINGLE SCIENCE, OCR BOARD - HIGHER TIER, PHYSICS

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P2d
Alpha ­ particle emitted by decay of some radioactive materials.
Background radiation ­ radiation from the surroundings.
Beta - particle emitted by decay of some radioactive materials.
Cosmic rays ­ nuclear radiation from space.
Gamma ­ high frequency wave emitted by decay of some
radioactive materials.
Ionisation ­ removal from or addition of electrons to a particle.
Nuclear radiation ­ emission of ionizing radiation from changes in a
nucleus.
Radioactive materials ­ substances which emit nuclear radiation.
Radioactive waste ­ material left over when uranium has been
used to make electricity.

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