Terbium

High school (ages 12+)
Science & Technology

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/terbium

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. Who discovered Terbium?1843 by Carl Gustaf Mosander
2. What is the element symbol?Tb
3. What is the atomic number?65
4. What is terbium and why does it glow green?Terbium is a shiny metal that has special electrons inside it. When these electrons jump to a higher level and then fall back, they give off bright green light. This green glow is used in screens and lights.
5. How does terbium help make screens and lights brighter?Terbium’s green light is very pure and bright, so it is added to phosphors that turn electricity into light. These phosphors make displays and LEDs more colorful and efficient.

Lanthanide Series: A group of 15 metallic elements (atomic numbers 57-71) characterized by the filling of the 4f electron subshell.
Luminescence: The emission of light by a substance that has not been heated, typically as a result of a chemical reaction or electric current.
Magnetostriction: The property of a ferromagnetic material to change its shape or dimensions when subjected to a magnetic field.
Rare Earth Elements (REEs): A group of 17 chemically similar metallic elements crucial for modern technologies.