Atoms & Nuclear Radiation (OCR GCSE Physics A, Combined (Gateway Science Suite)): Flashcards
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Practise the cards
13 cards from this deck
What is an alpha particle composed of?
What is an alpha particle composed of?
2 neutrons and 2 protons
How far does alpha radiation travel in air?
How far does alpha radiation travel in air?
Around 5 cm
What stops alpha radiation?
What stops alpha radiation?
Single sheet of paper
Ionisation strength of alpha radiation
Ionisation strength of alpha radiation
Very strongly ionising
What is a beta particle?
What is a beta particle?
Electron ejected from nucleus at high speed
How does a beta particle form in the nucleus?
How does a beta particle form in the nucleus?
Neutron changes into proton and electron
How far does beta radiation travel in air?
How far does beta radiation travel in air?
About 15 cm
What stops beta radiation?
What stops beta radiation?
Few millimetres of aluminium
Ionisation strength of beta radiation
Ionisation strength of beta radiation
Quite strongly ionising
What type of radiation is gamma?
What type of radiation is gamma?
Electromagnetic radiation from nucleus
How far does gamma radiation travel in air?
How far does gamma radiation travel in air?
Several meters
What absorbs gamma radiation?
What absorbs gamma radiation?
Thick lead sheets or meters of concrete
Ionisation strength of gamma radiation
Ionisation strength of gamma radiation
Weakly ionising