Stellar structure

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-structure

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 is the governing principle?Hydrostatic equilibrium, balancing gravity and outward pressure
2. What is the primary energy source?Nuclear fusion of hydrogen into helium in the core
3. What is a star made of?A star is a giant, fiery ball of gas. It is mostly hydrogen and helium, which glow because of the heat inside.
4. Why do stars not collapse under their own gravity?Stars stay steady because of hydrostatic equilibrium. Gravity pulls the gas inward, while the hot gas pushes outward, and the two forces balance at every point.

Hydrostatic Equilibrium: The balance between inward gravitational force and outward pressure within a star.
Nucleosynthesis: The process by which new atomic nuclei are created within stars and supernovae.
Stellar Seismology: The study of oscillations within stars to infer their internal structure and properties.