Unit 1 Topic 6: Particle Physics

Question 1

When is it a gravitational interaction?

Answer 1

Never gravitational

Question 2

When is it an electromagnetic force interaction?

Answer 2

When a photon is present it is an electromagnetic force interaction

Question 3

When is it a weak force interaction?

Answer 3

If there is a neutrino present then it is a weak force interaction

Question 4

When is it a strong force interaction?

Answer 4

When the up quarks and down quarks are separately conserved then it is a strong force interaction

Question 5

What are baryons?

Answer 5

Hadrons with 3 quarks

Question 6

What are mesons?

Answer 6

Mesons are hardrons with a quark, antiquark pair

Question 7

What are electrons and neutrinos

Answer 7

They are leptons and are fundamental particles

Question 8

What are the 3 things always conserved within an interaction to occur?

Answer 8

Charge is always conserved
Lepton number is always conserved
Baryon number is always conserved