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Ch 23: Properties of Galaxies Lesson Plans

About This Chapter

The Galaxies Properties chapter of this course is designed to help you plan and teach the types and characteristics of galaxies in your classroom. The video lessons, quizzes and transcripts can easily be adapted to provide your lesson plans with engaging and dynamic educational content. Make planning your course easier by using our syllabus as a guide.

Weekly Syllabus

Below is a sample breakdown of the Properties of Galaxies chapter into a 5-day school week. Based on the pace of your course, you may need to adapt the lesson plan to fit your needs.

DayTopicsKey Terms and Concepts Covered
Monday Collision and assembly of galaxies
Distribution of galaxy properties along the Hubble tuning fork
Spiral galaxies
Starburst galaxies, galactic cannibalism, the bottom-up hypothesis
Categories of galaxies according to the Hubble classification scheme
Types of spiral galaxies and their characteristics
TuesdayRing galaxies
The cosmic distance ladder
Hubble's law and constant
Definition of ring galaxies
Methods of finding the distances to celestial objects
Definition of Hubble's law and Hubble's constant, how Hubble's law works, calculations to find distance
Wednesday Measuring the properties of distant galaxies
Characteristics of stars' orbits
Dark matter and gravitational lensing
Ways astronomers find out the properties of galaxies, megaparsec, standard candles, Cepheid variable star, finding diameter and lumosity
Finding the orbital tendencies of stars, disk component, halo
Definition of dark matter, where it's found, gravitational lensing
Thursday Galaxy clusters
Active galactic nuclei
Seyfert galaxies and double lobed radio galaxies
Types of galaxy clusters and their characteristics
Definition of active galactic nuclei, their size and how they relate to quasars
Definition and characteristics of Seyfert galaxies and double lobed radio galaxies
Friday Quasars
The unified model
Supermassive black holes
Definition of quasars, how they got their name
Definition of the unified model, how it is used
Definition of supermassive black holes, where they are found, how they were formed and what they produce

15 Lessons in Chapter 23: Properties of Galaxies Lesson Plans
Test your knowledge with a 30-question chapter practice test
The Collision & Assembly of Galaxies

1. The Collision & Assembly of Galaxies

This lesson will talk about how the assembly and collision of galaxies is actually related, what starbursts are, what will happen to our own galaxy in four billion years, and why our galaxy is a galactic cannibal!

The Distribution of Galaxy Properties Along the Hubble Tuning Fork

2. The Distribution of Galaxy Properties Along the Hubble Tuning Fork

This lesson will explore Edwin Hubble's famous classification scheme. We'll go over the major morphological differences between the categories of galaxies and the differences within them.

Types of Spiral Galaxies

3. Types of Spiral Galaxies

Spiral galaxies are classified into several different types, depending on the characteristics of certain parts of their galaxy. Specifically, this lesson will go over Hubble's classification scheme of spiral galaxies with a small nod to lenticular galaxies as well.

Galaxy Collisions: Ring & Elliptical Galaxies

4. Galaxy Collisions: Ring & Elliptical Galaxies

This lesson will discuss the collisions between galaxies and what happens to the stars within them. It will also cover what a ring galaxy is and how it forms, as well as where elliptical galaxies are most common.

Links in the Cosmic Distance Ladder

5. Links in the Cosmic Distance Ladder

This lesson goes over the important basics regarding the cosmic distance ladder and primary, secondary, and tertiary indicators. It will also define standard candles and parallax.

Hubble's Law & Hubble's Constant

6. Hubble's Law & Hubble's Constant

This lesson will go over and define the Hubble Law and Hubble constant. We'll not only do a practice problem but also define conceptually what these two things mean to our cosmos.

Measuring the Properties of Distant Galaxies

7. Measuring the Properties of Distant Galaxies

This lesson will go over a couple of methods astronomers use to find out the properties of a distant galaxy, namely, its distance away from us and its mass.

Characteristics of Stars' Orbits in the Galaxy

8. Characteristics of Stars' Orbits in the Galaxy

This lesson will explore the spherical component and disk of the galaxy to find out what orbital tendencies stars and star clusters have within each section of the Milky Way Galaxy.

Dark Matter & Gravitational Lensing

9. Dark Matter & Gravitational Lensing

This lesson will describe what dark matter is, how much of a cluster of galaxies is made of it, where it's located, and how all of this is related to gravitational lensing.

What Are the Different Types of Galaxy Clusters?

10. What Are the Different Types of Galaxy Clusters?

This lesson will define five different types of clusters: rich, poor, irregular, regular, and superclusters. We'll also find out what voids are and what the Local Group is.

What are Active Galactic Nuclei?

11. What are Active Galactic Nuclei?

This lesson explores and defines active galaxies and active galactic nuclei. You'll learn how they relate to quasars and how big active galactic nuclei are thanks to the observations of the properties of light.

Seyfert Galaxies & Double-Lobed Radio Galaxies

12. Seyfert Galaxies & Double-Lobed Radio Galaxies

This lesson will cover two particular kinds of active galaxies called Seyfert galaxies and double-lobed radio galaxies and their peculiarities, such as hot spots and synchrotron radiation.

What Are Quasars?

13. What Are Quasars?

This lesson will go over the odd-sounding term quasar. You'll learn how the term appeared, the different kinds of quasars, and what they are actually believed to be.

What Are Supermassive Black Holes?

14. What Are Supermassive Black Holes?

This lesson will explain to you what a supermassive black hole is, where they're found, how large they are, how they likely formed, and what they emit into space.

Active Galactic Nuclei & the Unified Model

15. Active Galactic Nuclei & the Unified Model

This lesson will explain the unified model, a model developed by astronomers that tries to help explain how it is that supposedly different objects are really the same thing viewed from different angles.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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