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Book 28, Question 107 · Video

Why are racing bikes and sports gear made of carbon fiber?

Video · 1:49 · Crafty Clover explains, from A Million Whys Book 28

Carbon fiber is made of super-thin threads of carbon woven into cloth and soaked in glue called resin. Layer after layer is molded into shape. The result is very strong in the direction of the fibers but light. Designers can point the fibers where the stress is. It's used in bikes, tennis rackets, hockey sticks, and vaulting poles. It is expensive and can crack under certain hits.

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why are racing bikes and sports gear made of carbon fiber?

The Big Idea

Racing bikes and rackets are super light and strong! Many are made of carbon fiber. What is it?

Threads and Glue

Step one: Threads and Glue. Carbon fiber is made of super-thin threads of carbon woven into cloth and soaked in glue called resin. Layer after layer is molded into shape.

Strong and Light

Step two: Strong and Light. The result is very strong in the direction of the fibers but light. Designers can point the fibers where the stress is.

Everywhere

Step three: Everywhere. Carbon fiber is used in bikes, tennis rackets, hockey sticks, and vaulting poles. It's expensive and can crack under certain hits.

A Closer Look

Let's take a closer look! Super thin. Glues them. Molded. Where stress is.

Quick Facts

Quick facts! Carbon fiber is also used in airplanes and race cars. Very light weight. Strong along the fibers. Can crack sometimes.

Think Like a Scientist

Now, think like a scientist! Find a wooden ruler and a plastic ruler of the same size. Hold one in each hand. Compare their weights. Which is lighter? Why do designers care about weight?

Outro

Carbon fiber is made of super-thin carbon threads woven into cloth, soaked in resin, and molded in layers. It's very strong and light, so it's used in bikes, rackets, hockey sticks, and vaulting poles, though it can crack. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this