Scissors

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/scissors

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 earliest known pivot scissor?Attributed to Roman artisans, circa 100 AD
2. What is the primary mechanical principle?Second-class lever system amplifying applied force at the cutting edge
3. What are scissors and how do they work?Scissors are tools with two blades that pivot around a point. When you squeeze the handles, the blades move past each other and cut through paper, fabric, or other materials.
4. Where did scissors first appear?The first scissors that look like modern ones were made in ancient Rome around 100 AD. They used a pivot to let the blades turn against each other.

Fulcrum: The fixed point around which a lever pivots, in scissors, this is the central rivet or screw.
Shearing Stress: The internal resistance of a material to forces that cause layers to slide past one another.
Metallurgy: The science and engineering of metals, including their production, properties, and applications.
Ergonomics: The study of people's efficiency in their working environment, focusing on tool design for comfort and safety.