Schist

High school (ages 12+)
Environment & Earth

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/schist

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 rock type classification?Medium-grained metamorphic rock characterized by schistosity
2. What is the primary formation mechanism?Regional metamorphism during orogeny (mountain building) at medium grades
3. What is schist and why does it split into thin layers?Schist is a type of rock that can split into thin, flexible sheets. This happens because its minerals, like mica, line up in parallel layers that make the rock weak along those planes.
4. How does schist form from other rocks?Schist starts as fine‑grained rocks such as shale or volcanic tuffs. When these rocks are buried deep and heated and pressed by pressure, they change into schist.

Regional Metamorphism: Metamorphism occurring over large areas, typically associated with tectonic plate collisions and mountain building.
Platy Minerals: Minerals that have a tendency to form thin, flat sheets or flakes, such as micas.
Petrography: The branch of geology concerned with the detailed description and classification of rocks, especially using microscopy.