2 Quarks and Leptons

Question 1

Quarks

Answer 1

hadrons are made of quarks

Question 2

strange number

Answer 2

K- -1

K+ +1

Question 3

Lepton number

Answer 3

electron 1
muon 1
taon 1
electron neutrnio -1
muon neutrino -1
taon neutrino -1

Question 4

baryon number

Answer 4

proton 1
neutron 1
antiproton -1
antineutron -1

Question 5

conserved

Answer 5

charge
baryon number
energy 
mass
lepton number
strangeness

Question 6

matter

Answer 6

Hadron

-Baryon -meason
proton (uud) pie +,0,-
neutron (ddu) koan +,0,-

lepton

• electron
• antielectron
• muon
• antimuon
• taon
• antitaon

Question 7

strong force
(Strong interaction)

Answer 7

exchange particle = Gluon

effects = protons and neutrons in the nucleus

Question 8

weak force
( weak interaction)

Answer 8

exchange particle = W+ , W-

effects = Lepton (decay)
β- , β+

Question 9

Electrostatic force

Answer 9

exchange particle = virtual photon

effects = anything with a charge

Question 10

Gravity

Answer 10

exchange particle = Graviton (Higgs boson)

effects = anything with mass

Question 11

muon

Answer 11

a lepton that is negatively charged and has a greater rest mass than an electron

Question 12

pion (Pi meson)

Answer 12

a reason that consists of an up or down quark and an up and down antiquark

Question 13

kaon (k meson)

Answer 13

a reason that consists of a strange quark or antiquark and another quark / antiquark

Question 14

antimunon

Answer 14

antiparticle of the muon

Question 15

hadron

Answer 15

partciles and antiparticle that can interact through the strong interaction

Baryons
Mesons

Question 16

lepton

Answer 16

electrons, positrons, muons/antimuons, neutrinos and their antiparticles are classified as leptons because they cannot interact through the strong interaction. they interact through the weak interaction and, in the case of electrons, positrons, muons/antimuons through the electromagnetic interaction

Question 17

baryon

Answer 17

a hardon consisting of three quarks

Question 18

meason

Answer 18

a hardon consisting of a quark and an antiquark

Question 19

antiquark

Answer 19

antiparticle of a quark

Question 20

quark

Answer 20

protons and neutrons and other hardens consist of quarks. there are six types of quarks up, down, strange, charmed, top and bottom.

Question 21

Baryon is a quantum number

Answer 21

Theoretical expression for the valve of some quantised property of a subatomic particle

Question 22

What is the only stable baryon and every thing eventually decays into it

Answer 22

Proton

Question 23

Kaon can decay into

Answer 23

Pions

Question 24

Strange particles are particles that are produced through the strong interaction and decay through the …….

Answer 24

Weak interaction

Question 25

Is strangeness is conservation in strong interactions

Answer 25

Yes

Question 26

Cosmic ray showers

Answer 26

Source of high energy particles including pions and kaons

Question 27

Observation of stray tracks in cloud chamber

Answer 27

Alpha thick and straight

Beta whipsy and thin

Question 28

Observing high energy particles

Answer 28

Use of a geiger counter to detect a cosmic ray shower