WorksheetsParticle Physics Revision
Total questions: 23
Worksheet time: 12mins
All of the following are quarks except
strange
bottom
charmed
spark
A proton is made up of two up quarks and one down quark with charges of +2/3, -1/3, and –1/3.
True
False
More information is needed
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
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
Electrons were fired at a group of protons to investigate their structure, this is how quarks were discovered. What was the name of this process?
Diffraction
Electron microscope
Deep inelastic scattering
Refraction
What are fundamental particles?
Quarks
Electrons
Protons
Neutrons
What are the four fundamental forces from strongest to weakest?
Electrostatic, Gravity, Strong nuclear, weak nuclear
Gravity, Strong nuclear, weak nuclear, Electrostatic
Strong nuclear, Gravity, weak nuclear, Electrostatic
Strong nuclear, Electrostatic, weak nuclear, Gravity
Acts between any charged particles, can be attractive (opposite charges), or repulsive (like charges). It has an infinite range and is relatively strong.
Gravity
Electrostatic
Strong nuclear
Weak nuclear
Explains beta emission but as this does not always occur, it must be weaker than the strong force. It involves nucleons but also lighter particles, such as electrons.
Gravity
Electrostatic
Strong nuclear
Weak nuclear
What are exchange particles (bosons)?
They are used to explain the fundamental interactions between particles.
They are used to explain the fundamental interactions between nuclei.
They are used to explain the fundamental interactions between atoms.
They are used to explain the fundamental interactions between molecules.
From the graph, what is given by the gradient?
Resistance
Internal resistance
Potential difference
Electromotive force
It is a work done or energy supply to move a unit of charge from 1 point to another point in a closed circuit
This refers to
Internal resistance
Potential difference
Electromotive force
Resistance
What is the reading of voltmeter when the switch is closed?
It is the energy supplied by a battery/ electrical source per unit Coulomb.
This refers to:
Potential difference
Internal resistance
Electromotive force
Current
What is the value of the internal resistance?
Look at the graph and use it to work out ε and r
ε = 0.5V, r = 1.2Ω
ε = 1.2V, r = 0.8Ω
ε = 1.2V, r = 0.5Ω
ε = 0.8V, r = 0.5Ω
