Mill (grinding)

High school (ages 12+)
Making & Design

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/mill-grinding

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 core engineering principle?Size reduction (comminution) through mechanical forces like grinding, crushing, and cutting
2. What is the historical power evolution?Manual labor → Animal power → Wind/Water power → Electricity
3. What is a mill used for?A mill is a machine that breaks big rocks or grains into smaller pieces, making them easier to use in food, building, or science.
4. How did windmills and watermills grind things?Windmills use wind to spin sails that turn a grinder, while watermills use flowing water to turn a wheel that powers the grinding.

Unit Operation: A basic step in a chemical or industrial process, like grinding or filtering.
Particle Size Distribution: A measure of the range of particle sizes present in a powder or granular material.
Attrition: The process of wearing away or grinding down by friction or rubbing.