How many types of quark are there?

• 8

• 6

• 2

• 4

What type of particle is an electron?

• baryon

• hadron

• meson

• lepton

What is the electric charge of an up quark?

• -1/3

• 0

• +1/3

• +2/3

• +1

What is the electric charge of an anti-down quark?

• -2/3

• -1/3

• 0

• +1/3

• +2/3

What combination of quarks is a proton made of?

• uud

• udd

• ubb

• ssd

• css

What combination of quarks is a neutron made of?

• uud

• udd

• css

• ubb

• uub

A particle made of 3 quarks is called a....

• meson

• lepton

• baryon

• boson

A particle made of a quark and anti-quark is called a....

• meson

• lepton

• baryon

• boson

I am a second generation quark with positive charge. What am I?

• up quark

• down quark

• charm quark

• strange quark

• top quark

I am a lepton with no electric charge. What am I?

• muon

• meson

• electron

• neutrino