WorksheetsY13 - Particle physics
Total questions: 28
Worksheet time: 15mins
What kind of force holds the nucleus together?
Strong Nuclear Force
Weak Nuclear Force
Gravitational Force
Electromagnetic Force
Which set of radioactive emissions corresponds to the descriptions given in the table headings?
Which type of radiation shown by X?
alpha
beta
gamma
Which statement about alpha, beta and gamma radiation is correct?
Beta radiation has the greatest ionising power.
Alpha radiation has the greatest ionising power.
Gamma radiation has the greatest ionising power.
Alpha, beta and gamma radiation have nearly equal ionising powers.
What is a positron?
A positively charged electron
A small part of a proton
A particle collider
What Happens when Matter and Antimatter collide
Nothing Happens
They form a new substance
It DOESNT release energy
They Annihilate
What particles does the strong force act on?
quarks
leptons
quarks and leptons
particles with charge
All ordinary matter is made up of fundamental particles.
true
false
All fundamental particles of matter are associated with an anti-particle that has an equal and opposite charge.
true
false
These are light, elementary particles that are not made up of quarks.
Gluons
Electrons
Leptons
Baryon
These are the category of hadrons that contain three quarks. This distinguishes them from mesons, which contain two (1 quark and 1 antiquark).
Gluons
Electrons
Leptons
Baryons
All baryons are assigned a baryon number of ___, all anti-baryons are assigned ___, and all non-baryons are ___
-1, +1, 0
-1, 0, +1
+1, -1, 0
0, -1, +1
All leptons are assigned a lepton number of ___, all anti-leptons are assigned ___, and all non-leptons are ___
-1, +1, 0
-1, 0, +1
+1, -1, 0
0, -1, +1
There are three families of leptons;
electron, muon, and pi.
electron, muon, and tau.
electron, pi and tau.
electron, pi and neutrino.
The main three conservation laws used in particle physics are:
Conservation of charge, baryon and lepton numbers.
Conservation of gravity, charge and lepton numbers.
Conservation of momentum, hadron and lepton numbers.
Conservation of charge, hadron and lepton numbers.
Using the conservation laws, state which interaction is possible:
proton + electron => neutron + neutrino (e-)
proton + neutron ==> proton + proton + anti-proton
Which quarks form a neutron?
up, up, down
down, down, down
up, up, up
up, down, down
Under the guidence of Rutherford, what particle did Geiger & Marsden fire at gold foil?
Neutron
Alpha
Proton
Electron
Why do the tubes in a LINAC get longer throughout the accelerator?
So the particle can be accelerated
So the polarity of the supply can be switch between each tube
So the electric field can be kept constant
So the frequency of the alternating supply can be kept constant
Why do are protons in particle accelerated to close to the speed of light in particle accelerators?
To conserve momentum
To create mini black holes
So extra energy is available to create new mass
Because time slows down close to the speed of light
What is the job of the magnetic field in a cyclotron?
Create a force perpendicular to the motion of the particle, which acts a centripetal force
To accelerate the particle between the dees
To apply a force parallel to the direction of motion of the particle, which acts as the centripetal force.
So the direction of the force can be alternated every half turn
