Book 26, Question 61 · Video
Why does a paper clip hold papers together?
A paper clip is a piece of bent wire in a loop within a loop. When you slide it over paper, the wire bends slightly apart and then springs back, squeezing the sheets. The metal is springy but not too stiff. The common Gem-style clip, with two loops, was made around the 1890s. It is a simple machine that uses spring force.
Read the full answer →Watch on YouTubeSee the series on Amazon
What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why does a paper clip hold papers together?
The Big Idea
A paper clip is just a bent piece of wire. But it holds papers tightly! How does it work?
Loops
Step one: Loops. A paper clip is a piece of bent wire in a loop within a loop. It is a simple but clever shape.
Springing Back
Step two: Springing Back. When you slide it over paper, the wire bends slightly apart and then springs back, squeezing the sheets. The metal is springy but not too stiff.
The Gem Clip
Step three: The Gem Clip. The common Gem-style clip, with two loops, was made around the 1890s. It is a simple machine that uses spring force.
A Closer Look
Let's take a closer look! The outer loop holds. The inner loop presses. Spring force squeezes. Papers stay together.
Quick Facts
Quick facts! Paper clips are often made of steel wire coated to prevent rust. Gem style clip. Made of thin steel wire. Bend too far and it won't spring.
Think Like a Scientist
Now, think like a scientist! Bend a paper clip open gently. Watch how it springs back. Now bend it farther. What happens if you bend it too far? Why does it stop springing back?
Outro
A paper clip holds papers because its springy wire loops bend apart and spring back, squeezing the sheets. The Gem-style clip from the 1890s uses spring force. Science is amazing! What will you discover next? Every question is a new adventure, so keep wondering and keep exploring with me! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!