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The Universe at the Smallest Level: The Forces that Rule Our World (Part 2)

In this 10-week class learners will build on their understanding of particle physics by studying the four forces that rule the universe, and the way these forces cause particles to act.
Kelly McGrath
Average rating:
4.9
Number of reviews:
(852)
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What's included

10 live meetings
8 hrs 20 mins in-class hours

Class Experience

US Grade 5 - 8
This is the second part in a series of classes designed to introduce learners to particle physics. In part 1 I introduced learners to the Standard Model of Particle Physics and helped learners understand the matter and forces that cause everything in our universe to exist.  In this class, part 2, we will explore the properties of particles, as well as how particles interact using the different forces.  Properties discussed will include spin, mass, electromagnetic (QED), and chromatic (QCD).  We will take a deeper look into how the quantum forces (electromagnetic force, strong nuclear force, and weak nuclear force) effect particles, and why some particles are not effected by all forces.

Week 1: Review of Standard Model
~ Review the Standard Model of Particle Physics (from Part 1)
~ Learn the quantum meaning of applying force

Week 2: Electromagnetic Force (QED)
~ Understand the quantum reasons for attraction and repulsion between electric charges
~ Listen as I describe the properties of photons and why they only impact certain particles

Week 3: QED Reactions Between Particles
~ Understand what Feynman diagrams are and how they show reactions between particles
~ Sketch several Feynman diagrams and be able to explain the reactions they represent
~ Learn about virtual particles, how they act, and their presence in Feynman diagrams

Week 4: Strong Nuclear Force (QCD)
~ Understand the basics of how the strong force, which is called quantum chromodynamics (qcd)
~ Listen as I explain the development of qcd and how we now understand the strong nuclear force
~ Sketch examples of protons and neutrons that have accurate quarks and include the correct qcd (also called color charge)

Week 5: QCD Reactions Between Particles
~ Strong force-carrying gluons (types of color charge they can carry)
~ Quarks change color through gluon exchange
~ Sketch Feynman diagrams to show the ways quarks and gluons carry and/or change their color charge

Week 6: Spin Property of Particles
~ Listen and ask/answer questions about the spin property of particles
~ Sketch a model of the experiment that proved that particles have spin
~ Learn the spin of the particles in the Standard Model

Week 7: Mass Property of Particles
~ Understand the relationship between mass and energy
~ Learn the mass of the particles in the Standard Model
~ Understand how probability helps us understand mass of particles

Week 8: Weak Nuclear Force and Particle Decay
~ Understand how particles decay through the weak force
~ Sketch sample Feynman diagrams showing particle decay
~ Predict further decays

Week 9: Weak Nuclear Force and Radiation
~ Understand that beta radiation in atoms is caused by the weak force
~ Sketch example of how an atom decays and explain the result of the decay (radioactivity)
~ Use what you learn to explain why some elements are radioactive and others are not

Week 10: Gravitational Force and its Unknowns in Particle Physics
~ Learn specific details about why gravity works
~ Understand the difference between gravity at the particle level and gravity at our level
~ Understand why we haven't yet found an elementary particle of gravity
Learning Goals
Learners will understand that all things happening in the universe are caused by particles and their interactions. They will be able to explain and describe elementary particle interactions after completing this class.
learning goal

Syllabus

Curriculum
Follows Teacher-Created Curriculum
10 Lessons
over 10 Weeks
Lesson 1:
Review of Standard Model
 ~ Review the Standard Model of Particle Physics (from Part 1)
~ Learn the quantum meaning of applying force 
50 mins online live lesson
Lesson 2:
Electromagnetic Force (QED)
 ~ Understand the quantum reasons for attraction and repulsion between electric charges
~ Listen as I describe the properties of photons and why they only impact certain particles 
50 mins online live lesson
Lesson 3:
QED Reactions Between Particles
 ~ Understand what Feynman diagrams are and how they show reactions between particles
~ Sketch several Feynman diagrams and be able to explain the reactions they represent
~ Learn about virtual particles, how they act, and their presence in Feynman diagrams 
50 mins online live lesson
Lesson 4:
Strong Nuclear Force (QCD)
 ~ Understand the basics of how the strong force, which is called quantum chromodynamics (qcd)
~ Listen as I explain the development of qcd and how we now understand the strong nuclear force
~ Sketch examples of protons and neutrons that have accurate quarks and include the correct qcd (also called color charge) 
50 mins online live lesson

Other Details

Pre-Requisites
Completion of The Universe at the Smallest Level: Understand the Building Blocks (Part 1 of 3) OR previous experience with the Standard Model of Particle Physics.
Supply List
A notebook dedicated to this subject is preferred, but not required. We will reference material from previous lessons so it will be helpful to have previous notes.
External Resources
Learners will not need to use any apps or websites beyond the standard Outschool tools.
Joined January, 2020
4.9
852reviews
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Teacher expertise and credentials
Bachelor's Degree in Education from St. Cloud State University
I have been teaching homeschoolers ages 6-21 for 18+ years. During that time I've taught all traditional subjects and found ways to tailor them to the needs and learning styles of all learners.  I have taught math, chemistry, and physics on Outschool for 3 years. I have studied particle physics in the past and continue to attend particle physics lectures to broaden my base knowledge and help me teach the most up-to-date material possible in this changing field.  During my time teaching I've had many learners ask about the subatomic world and what we know about it, which has helped me create strategies in teaching this content.

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Live Group Course
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$18

weekly or $180 for 10 classes
1x per week, 10 weeks
50 min

Completed by 16 learners
Live video meetings
Ages: 10-14
2-8 learners per class

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