Ch 19: Star Death and Stellar Remnants: Help and Review

About This Chapter

The star death and stellar remnants chapter of this Intro to Astronomy Help and Review course is the simplest way to master star death and stellar remnants. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of star death and stellar remnants.

Who's it for?

Anyone who needs help learning or mastering introductory astronomy material will benefit from taking this course. There is no faster or easier way to learn introductory astronomy. Among those who would benefit are:

  • Students who have fallen behind in understanding star death and stellar remnants
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about star death and stellar remnants
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the star death and stellar remnants chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the star death and stellar remnants chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any star death and stellar remnants question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

This chapter helps students review the concepts in a star death and stellar remnants unit of a standard intro to astronomy course. Topics covered include:

  • Supernova and supergiant star life cycles
  • The life cycle of neutron stars
  • Stellar remnant characteristics of white dwarf stars
  • The death of a star
  • Giant stars and helium fusion
  • The death of lower-main-sequence stars
  • Planetary nebulae
  • Helium fusion and degenerate electron pressure
  • Binary systems and the death of stars
  • How massive stars die
  • Neutron stars and supernovae
  • Pulsars defined
  • The life cycle of black holes
  • The origin of gamma-ray bursts

22 Lessons in Chapter 19: Star Death and Stellar Remnants: Help and Review
Test your knowledge with a 30-question chapter practice test
Red Giant, Horizontal & Asymptotic Giant Branch Stars

1. Red Giant, Horizontal & Asymptotic Giant Branch Stars

This lesson will outline how stars of low to intermediate mass die as seen on the H-R diagram. We'll cover important key terms such as red giant branch stars, asymptotic branch stars, and horizontal branch stars.

Life Cycle of Neutron Stars

2. Life Cycle of Neutron Stars

Discover the life of a neutron star, including how it's born after a supernova explosion and how its extreme pressure causes protons and electrons to combine into neutrons. Discover also how pulsars are rotating neutron stars that will eventually slow down to become regular neutron stars.

Binary Pulsars & Pulsar Planets

3. Binary Pulsars & Pulsar Planets

This lesson will describe important concepts related to pulsars, namely binary pulsars, such as pulsar planets, millisecond pulsars, and gravitational waves.

Cosmic Rays: Definition & Origin

4. Cosmic Rays: Definition & Origin

This lesson will explain what cosmic rays are (including primary and secondary cosmic rays), where they come from, if you should be worried about them, and what you can do to protect yourself from them if need be.

What Are White Dwarfs? - Stellar Remnant Characteristics

5. What Are White Dwarfs? - Stellar Remnant Characteristics

White dwarfs are incredible little stellar remnants. Which begs the question, are they actually stars or not? This lesson will tell you if and why and how white dwarfs come to be. That, and you'll learns some incredible facts about them as well.

Giant Stars and Helium Fusion

6. Giant Stars and Helium Fusion

This lesson will explain to you why a star nearing its end will become a giant star, and how the energy generating processes in its core will change as a result.

How Lower-Main-Sequence Stars Die

7. How Lower-Main-Sequence Stars Die

Not every star lives or dies the same way. Red dwarfs and medium-sized stars have key differences that determine their lifespan and how they die. This lesson will tell you why that is the case.

What Are Planetary Nebulae?

8. What Are Planetary Nebulae?

This lesson will define something very cool and beautiful called a planetary nebula. You'll not only learn what it is but how it's formed, and why it produces all those amazing colors!

Helium Fusion and Degenerate Electron Pressure

9. Helium Fusion and Degenerate Electron Pressure

Standard gas laws need not apply under the special circumstances described in this lesson with concepts like degeneracy, degenerate electron pressure, helium fusion, and the Coulomb barrier.

Binary Systems and Novae

10. Binary Systems and Novae

This lesson will explain for you something known as the Algol paradox, what binary stars are, and how Roche lobes, the inner Lagrange point, novae, accretion disks, and novae are all involved in binary systems.

How Massive Stars Begin To Die

11. How Massive Stars Begin To Die

The ways massive stars and smaller stars evolve near their end are very different. This lesson will explain where they diverge, why, and what factors influence the beginning of the end for massive stars.

What are Neutron Stars and Supernova Remnants?

12. What are Neutron Stars and Supernova Remnants?

This lesson will describe what happens after a supernova explosion occurs. Something known as a supernova remnant or neutron star may remain after the explosion, and you'll find out why that's important and how they form.

The Different Types of Supernovae

13. The Different Types of Supernovae

There are different types of supernovae, and this lesson will tell you what they are and what their differences are. We'll mainly focus on type II supernovae and types Ia and Ib supernovae.

Supernova: How Massive Stars Explode

14. Supernova: How Massive Stars Explode

This lesson will explain how it is that a supernova comes to be by delving into how concepts like iron, core contraction, a core bounce, the strong force, and neutrinos all play a role in this event.

What Are Pulsars?

15. What Are Pulsars?

This lesson will define and describe pulsars. Importantly, you'll learn why the term is a bit of a misnomer, what acts as a pulsar and why, and what it pulses out.

Life Cycle of Black Holes

16. Life Cycle of Black Holes

Learn about black holes, their myths and their reality. Learn how black holes form after stars undergo supernovae and create singularities. Discover how big black holes grow, how scientists find black holes and where black holes are located in the universe.

Black Holes: Escape Velocity and the Singularity

17. Black Holes: Escape Velocity and the Singularity

This lesson defines black holes and introduces two important concepts related to them, escape velocity and singularity, so you can build a base for further investigation of concepts related to black holes.

Black Holes: the Event Horizon and Schwarzschild Radius

18. Black Holes: the Event Horizon and Schwarzschild Radius

This lesson describes the event horizon and the Schwarzschild radius, including their implications on the gravitational attraction a black hole exerts on the universe around it.

Finding and Leaping into Black Holes

19. Finding and Leaping into Black Holes

Did you ever wonder what would happen if you fell into a black hole? Is it a good idea to use it for time travel? And what would your friends see as you fell in? Using this lesson on finding one might reveal it's not such a good idea. Or is it?

The Origin of Gamma-ray Bursts

20. The Origin of Gamma-ray Bursts

Gamma-ray bursts are so powerful, they may one day destroy us. But where do they come from? Find out as we define gamma-ray bursts, hypernovae, and magnetars in this lesson.

Cosmic Recycling: From Stellar Death to Human Life

21. Cosmic Recycling: From Stellar Death to Human Life

Did you know that you are related to the stars you see in the sky? Did you know that you're made of recycled material? This lesson will tell you how and why.

Life Cycle of a Star Project Ideas

22. Life Cycle of a Star Project Ideas

The life cycle of a star is a topic that begs to be expanded beyond a lecture. These project ideas can give your students new ways to interact with this material.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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