Umbriel

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/umbriel

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 location?Third-largest moon of Uranus
2. What is the diameter?Approximately 1,169 kilometers
3. Why does Umbriel look so dark?Its surface reflects very little light, giving it a low albedo. This darkness is likely caused by dark, possibly carbon‑rich materials covering the moon.
4. How many craters does Umbriel have?Umbriel is the second‑most heavily cratered moon of Uranus, with many impact craters that have stayed largely unchanged for billions of years.

Albedo: The measure of how much light a surface reflects; a low albedo means a dark surface.
Endogenic Processes: Geological processes that originate from within a planet or moon, such as volcanic activity or tectonic shifts.
Accretion Disk: A rotating disk of gas and dust surrounding a newly formed star or planet, from which celestial bodies can form.