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- 1are quarks fundamental particlesyes, they are the building blocks for hadrons.
antiparticles of hadrons are made from antiquarks - 2what 2 quarks do you need to make protons and neutronsup and down
- 3what does the strange quark allow you to domake more particles with the property called strangeness
- 4is strangeness always conserved?no, only some of the time.
- 5name 1 strange particlekaons
- 6how are strange particles created and how do they decaythey are created via the strong interaction but decay via the weak interaction
- 7strange particles are always produced in _________pairs
E.g. K+ and K-
one has a strangeness of +1 and the other has a strangeness of -1 so overall strangeness of 0 is conserved - 8quarks and antiquarks have __________ propertiesopposite
- 9properties of the 3 quarks and 3 antiquarks symbol, charge, baryon number and strangeness
- 10baryons are made from _____ quarks3
- 11where did evidence for quarks come fromhitting protons with high energy electrons. the way the electrons scattered showed that there were 3 concentrations of charge (quarks) inside the proton
- 12what is the quark composition of a proton and an antiprotonproton - up up down (uud)
antiproton - antiup antiup antidown - 13what is the quark composition of a neutron and an antineutronneutron - up down down (udd)
antineutron - antiup antidown antidown - 14mesons are a _______ and an ________quark and an antiquarks
pions are made from combos of u,d,au,ad
kaons have strangeness so have an s quark - 15π- is the __________ of the π+ meson & K- is the ___________ of the K+ mesonantiparticle
- 16what is the antiparticle of the π0 mesonitself
- 17the weak interaction is something that changes _______ _______quark type
- 18what quarks change in B- decaya neutron is changed into a proton
udd -> uud
so d quark changes to a u quark
only the weak interaction can do this - 19what are the 4 properties conserved in particle interactions?1. charge
2. baryon number
3. strange in strong interactions
4. different types of lepton numbers need to be conserved seperately - 20is there such thing as a free quark?nope, you cannot separate quarks so there is one alone = quark confinement
- 21if you blasted a proton with enough energy, what will happen?the energy gets changed into more quarks and antiquarks - pair production to make mesons.
- 22how was the neutrino hypothesised?observations of beta decay
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- Fichas sobre Sin título, creado por Caitlin Kerr el 12/05/2018.
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- Caitlin Kerr
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