Chisel

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/chisel

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 material evolution?Evolved from sharpened stone and bone to bronze, iron, and hardened steel
2. What is the mechanical principle?Concentrates force onto a sharp edge, exceeding material shear strength
3. How did chisels change over time?Early chisels were made from sharp stones, then bronze, then iron, and now steel, which makes them sharper and stronger.
4. Why do woodworkers use hand chisels instead of power tools?Hand chisels give woodworkers more control and feel, letting them make very precise cuts and detailed carvings.

Shear Strength: The maximum stress a material can withstand before it deforms or breaks.
Tempering: A heat treatment process to increase toughness and reduce brittleness in steel.
Hafting: The process of attaching a tool head, like a chisel blade, to a handle.