Stellar evolution

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/stellar-evolution

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What happens when a star first starts to form?A dense clump inside a cold cloud collapses and heats up, becoming a protostar that keeps gathering material until it can start nuclear fusion.
2. Why do big stars burn out faster than small stars?Bigger stars are hotter and have more pressure, so they use up their hydrogen fuel in only a few million years, while tiny stars like red dwarfs use it slowly and can shine for trillions of years.

Hydrostatic Equilibrium: The balance between outward thermal pressure and inward gravitational force within a star.
Red Giant: A large, luminous star in a late stage of evolution, characterized by expanded outer layers.
Planetary Nebula: An expanding shell of gas ejected from a dying star, often forming a colorful, glowing cloud.
Neutron Star: An extremely dense, compact star composed primarily of neutrons, formed from a supernova remnant.