Slate

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/slate

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 classification?Fine-grained, foliated metamorphic rock, characterized by slaty cleavage
2. What is the parent rock composition?Typically derived from shale, mudstone, or volcanic ash, composed of clay minerals
3. How does slate get its special ability to split?Heat and pressure turn tiny mineral flakes inside the rock into a pattern called slaty cleavage. This pattern lets the rock split easily into flat sheets.
4. Why does slate come in many colors?Different minerals, like iron or chlorite, mix into the rock. They give slate shades from gray to red, purple, green, blue, or black.

Metamorphism: The geological process by which existing rocks are transformed into new types of rock by heat, pressure, or chemical reactions.
Foliation: A planar arrangement of mineral grains or structural features within a rock, typically formed by directed pressure during metamorphism.
Slaty Cleavage: A pervasive, closely spaced fabric in slate that allows it to be split into thin, flat sheets, perpendicular to the direction of maximum stress.
Fissility: The characteristic ability of a rock, like slate, to split easily into thin, parallel layers or laminae.