Quarks

What are atoms made of?

• • Cells, molecules, and electrons

• • Protons, neutrons, and electrons

• • Molecules, protons, and leptons

By the early 1930s, which subatomic particles had been discovered?

• • Pions, mesons, and deltas

• • Electrons, neutrinos, and mesons

• • Protons, neutrons, and electrons

• Apples, Bananas, Cherries

What did physicists discover as they continued experimenting with radioactive decay and fission?

• • Only protons and neutrons

• • New particles that weren't protons, neutrons, or electrons

• • That electrons were the smallest particles

• • That atoms were the smallest units of matter

What theory did Murray Gell-Mann and George Zweig introduce in 1964?

• • The Standard Model

• • The Atomic Theory

• • The Theory of Relativity

• • The Quark Theory

How many flavors of quarks are there?

• 4

• 6

• 8

• 10

Which of the following is not a type of quark flavor?

• • Charm

• • Strawberry

• • Down

• • Up

What are the only particles of matter that aren't made up of quarks?

• • Leptons

• Protons

• Neutrons

• Molecules

Which of the following is a type of lepton?

• Quark

• Electron

• Neutron

• Rice

What happens to tau and muon leptons soon after they come into existence?

• • They transform into electrons

• Leptons? Help!

• • They break apart to form two quarks and a neutrino

• • Not this answer

What theory did Murray Gell-Mann and George Zweig introduce in 1964, and why is it important?

Answer explanation

Murray Gell-Mann and George Zweig introduced the Quark Theory in 1964. It is important because it explained that all subatomic particles were combinations of just two types of smaller particles: quarks and leptons