U3-4-1 - Nuclear Decay
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Nuclear radiation is emitted from the _______of a radioactive isotope and may be in the form of particles or waves.
nucleus
Radioactive isotope (radioisotope)
An isotope with an unstable nucleus that undergoes nuclear decay.
Why do nuclei emit radiation?
To become more stable.
Alpha radiation consists of ____________.
Alpha radiation consists of helium nuclei.
_________ radiation consists of helium nuclei.
Alpha radiation consists of helium nuclei.
Nuclide notation for alpha particles
Beta radiation consists of __________.
Beta radiation consists of high speed electrons.
______ radiation consists of high speed electrons.
Beta radiation consists of high speed electrons.
Nuclide notation for beta particles
Gamma radiation consists of _________.
Gamma radiation consists of electromagnetic waves.
______ radiation consists of electromagnetic waves.
Gamma radiation consists of electromagnetic waves.
Alpha radiation can be stopped by ___________.
Alpha radiation can be stopped by a sheet of paper.
________ radiation can be stopped by a sheet of paper.
Alpha radiation can be stopped by a sheet of paper.
Beta radiation can stopped by ________.
Beta radiation can stopped by a thin sheet of aluminium.
_____ radiation can stopped by a thin sheet of aluminium.
Beta radiation can stopped by a thin sheet of aluminium.
Gamma radiation can be stopped by ________.
Gamma radiation can be stopped by a thick slab of lead or concerete.
______ radiation can be stopped by a thick slab of lead or concerete.
Gamma radiation can be stopped by a thick slab of lead or concerete.
Label the path arrows (alpha, beta, gamma).
