Creado por Sarah Collinson
hace más de 8 años
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Pregunta | Respuesta |
What are the three types of radiation emitted during decay? | - Alpha α - Beta β - Gamma γ |
What is the structure of an alpha particle? | 2 protons + 2 neutrons |
What is the charge and mass of an alpha particle? | - Charge = +2 - Mass = 4 |
Which element is an alpha particle the nucleus of? | Helium |
What is the range in air of an alpha particle? | A few cm, will be stopped by skin or paper |
What is a beta particle and how is it formed? | An electron ejected from the nucleus when a neutron breaks down into a proton and an electron |
What is the charge and mass of a beta particle? | - Charge = -1 - Mass = 0 (negligible) |
What is the range in air of a beta particle? | 1 metre, will be stopped by a few mm of aluminium |
What is a gamma ray? | En electromagnetic wave |
What is the charge and mass of a gamma ray? | - Charge = 0 - Mass = 0 |
What is the range in air of a gamma ray? | Unlimited in air, will be stopped by a few feet of concrete |
Define ionisation | Where nuclear radiation travels through a material and collides with the atoms, knocking electrons off and creating ions |
Give the three types of radiation in order from most to least ionising | - Alpha - Beta - Gamma |
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