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Book 26, Question 28 · Video

How did a kingfisher help shape a fast train?

Video · 1:46 · Crafty Clover explains, from A Million Whys Book 26

Japan's high-speed trains made a loud boom when they zoomed out of tunnels, because they pushed air ahead like a piston. An engineer who watched birds noticed that a kingfisher dives into water with barely a splash. Its long, narrow beak slips smoothly from thin air into thick water. Copying that shape for the train's nose made it quieter and faster.

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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 did a kingfisher help shape a fast train?

The Big Idea

Japan's bullet trains are super fast! But they had a noisy problem. A bird helped solve it!

The Boom

Step one: The Boom. Japan's high-speed trains made a loud boom when they zoomed out of tunnels. They pushed air ahead of them, like a piston.

The Bird

Step two: The Bird. An engineer who watched birds noticed that a kingfisher dives into water with barely a splash. Its long, narrow beak slips smoothly from thin air into thick water.

New Nose

Step three: New Nose. Copying that shape for the train's nose made it quieter. It also made the train faster.

A Closer Look

Let's take a closer look! The bird dives. The beak is pointed. The nose copies it. The boom gets quieter.

Quick Facts

Quick facts! The redesigned train also used less electricity. A bird watcher found it. No big splash. Tunnels made the boom.

Think Like a Scientist

Now, think like a scientist! Look at a picture of the Shinkansen bullet train's nose with a grown-up. Find a picture of a kingfisher. Draw the train's nose next to the bird's beak. How are the shapes alike? How are they different?

Outro

A kingfisher helped shape a fast train when an engineer copied its long, narrow beak for the train's nose. The new shape made the train quieter, faster, and less power-hungry. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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