WorksheetsSubatomic Particles
Total questions: 28
Worksheet time: 1hrs 24mins
The Hadron detector shows a signal only in the hadronic calorimeter (no signal in the tracker, electromagnetic calorimeter or muon chambers). Therefore, this signal is most likely
pion
electron
neutron
photon
How much of our universe is made of matter or energy, which we do not know about?
0.001 %
10 %
45 %
96 %
How do we see “quarks” in a detector?
By their characteristic spiral trajectory
Via “jets” of hadrons they generate
As two individual straight tracks in opposite directions
You cannot see quarks
The particles carrying the strong force are the
photons
gluons
Z- or W- bosons
None of the above
Which was the first particle discovered which is still today believed to be elementary, i.e. not made up of further constituents?
electron
gluon
proton
photon
Approximately how many times do the protons in the LHC fly around the accelerator ring in 1 second?
1
100
10 000
1 000 000
Superconducting magnets bend the protons around the LHC ring. What do you think is the temperature of these magnets?
Room temperature, 300 K
Colder than outer space, 1.9 K
Temperature of outer space, 2.7 K
163.2 K
Which of the following complements makes a wrong statement? “The Higgsmechanism …
… explains the production of antimatter”
… explains the masses of particles”
… was invented by the British physicist Peter Higgs”
… applies everywhere in the universe”
Why do tau and mu leptons decay?
Because they interact with the magnetic field of the experiment
Because there are lighter particles they can decay to
Because there is so much energy produced in e.g. LEP collisions that they break apart
Because your physics instructor says so
Our universe is dominated by…
ordinary matter
dark matter
dark energy
equal amounts of all three
Fundamental or elementary particles are particles that aren't made up of smaller particles. What is the most common type of fundamental particle in the universe?
atom
meson
neutrino
quark
What are the fundamental particles of an atom?
quarks, gluons, electrons
protons, electrons, neutrons
nucleus and electron orbits
an atom is indivisible
What are fermions?
Groups of particles with the same charge or mass
Hard subatomic solids
Fundamental particles of matter
Elements with ferrous metallic properties
What are bosons?
Elementary crew members on merchant vessels
A term in particle physics used to describe matter
Subatomic particles that carry forces
An electron switch used in nano-circuits
Why are scientists looking for the so-called God particle or Higgs boson?
They like crashing atoms together for fun
They want to find a force carrying particle that gives other particles mass
They want to find evidence of God
Because physicist Peter Higgs wants his boson back
What are mesons?
A type of composite particle produced by high energy
A contagious disease caught by subatomic particles
An antimatter version of the electron
A type of Japanese soup
Which of the following sentences about antimatter is NOT true:
Antimatter is normal matter with an opposite charge
Antimatter is only produced in particle accelerators
Antimatter annihilates matter
Equal amounts of antimatter and matter were created during the Big Bang
What is super string?
Coloured material which can be sprayed out of cans and provide hours of fun for all ages
Forces needed to hold atoms together
A time line in physics and chemical reactions needed for an effect to take place
A hypothesis which attempts to explain the elementary particles of nature
What do we call a particle that is not made up of any smaller particles?
Atomic particle
original particle
elementary particle
base particle
What category of elementary particles are matter particles?
cations
fermions
bosons
Einsteins
What category of elementary particles are force-carrying particles?
Cations
Fermions
Bosons
Einsteins
Light is made up of what type of elementary particles?
Quarks
Leptons
Photons
Gluons
All of the above
What type of elementary particles are electrons?
Quarks
Leptons
Photons
Gluons
All of the above
What elementary particles are the building blocks for protons and neutrons?
Quarks
Leptons
Photons
Gluons
All of the above
What type of elementary particles create the strong force between quarks?
Quarks
Leptons
Photons
Gluons
All of the above
How many quarks make up a proton?
0
1
2
3
4
What particle is made up of two 'down' quarks and one 'up' quark?
Atom
Electron
Neutron
Proton
Tachyon
What theoretical particle travels faster than the speed of light?
Quark
Boson
Fermion
Tachyon
