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WorksheetsAlpha, Beta, Gamma
Total questions: 12
Worksheet time: 6mins
What are alpha particles?
Ionised molecules
Helium nuclei
Heavy atoms
Particles similar to beta particles
How do alpha particles travel?
In curved paths
With similar velocities
With different velocities
Towards a positively charged plate
Why do alphas have a short range in air?
Because they are ions
Because they are heavy
Because they easily collide with other molecules
Because they possess kinetic energy
Alpha particles are likely to ionise air molecules when they collide with them because...
they are positively charged
they are negatively charged
they possess a lot of kinetic energy
air molecules are moving about
What is the main difference between alpha and beta particles?
Their production
Their effects on air molecules
Their charge
Their direction of travel
Beta particles are best described as
electrons
unstable particles from a nucleus
neutrons
a fraction of a proton
How do beta particles travel?
In curved paths
With alpha particles
Towards a positively charged surface
With velocities the same as light
Beta particles are best stopped by a barrier of...
thick paper
thick aluminium
air molecules
alpha particles
Beta particles are poor ionisers because...
they carry a negative charge
they move at high velocity
they come from a decaying nucleus
they possess little mass
Which is not a property of beta particles?
They are absorbed by liquids
They penetrate thin metals
They are negatively charged
They travel in air in straight lines
Gamma radiation is best described as
the release of energy from rocks
the result of nuclear disintegrations
electromagnetic waves of high frequency
electromagnetic waves of low frequency
For gamma radiation to be shielded economically, which would be best? And why?
Thick concrete, because it's cheap
Thick concrete, because it's dense
Lead because it's heavy
Lead because it's light
