Book 21, Question 112 · Video
How Can a Train Float on Magnets?
Imagine a train that floats just above its track, with no wheels touching at all. It is called a maglev train, and it really exists!
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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. How can a train float on magnets?
The Big Idea
Imagine a train that floats just above its track, with no wheels touching at all. It is called a maglev train, and it really exists! Let's find out how magnets lift a whole train, and why it can go so fast.
Magnets in Train and Track
Step one: magnets in train and track. Magnetic levitation trains, called maglevs, use powerful magnets in the train and in the track. These magnets push or pull in clever ways.
Floating Up
Step two: floating up. The magnets lift the train a few inches above the track. They also move it forward along the way, so the train glides without an engine pulling it.
No Rubbing
Step three: no rubbing. With no wheels rubbing on rails, there is little friction. Some maglev trains in service reach over 250 miles per hour.
A Closer Look
Let's take a closer look! The train has powerful magnets. The track has magnets too. The train floats a few inches up. With no rubbing, it flies.
Quick Facts
Quick facts! A maglev train floats so smoothly that its ride feels quiet. Some trains reach over 250 miles per hour. No wheels rub on rails. Magnets lift and move the train.
Think Like a Scientist
Now, think like a scientist! Draw a train with wheels. Draw a maglev train without wheels. Mark every place where friction slows the wheeled train. Compare the two pictures. Keep asking why, and keep exploring!
Outro
Maglev trains float on magnets, so there is almost no friction to slow them down. Science is amazing! Keep wondering and keep exploring! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!