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Book 27, Question 3 · Video

Why do crystals have flat sides and sharp corners?

Video · 1:46 · Crafty Clover explains, from A Million Whys Book 27

Crystals grow outward by adding one layer of atoms at a time, and every layer follows the same pattern as the one under it. The flat faces you see are the outer edges of those neat layers. The corners are where flat faces meet. When a crystal has room to grow without bumping into anything, those smooth faces and sharp points can look like they were cut by a jeweler.

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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 do crystals have flat sides and sharp corners?

The Big Idea

Crystals often have flat sides and sharp points. They look like a jeweler cut them! But they grew that way.

Layers

Step one: Layers. Crystals grow outward by adding one layer of atoms at a time. Every layer follows the same pattern as the one under it.

Faces and Corners

Step two: Faces and Corners. The flat faces you see are the outer edges of those neat layers. The corners are where flat faces meet.

Room to Grow

Step three: Room to Grow. When a crystal has room to grow without bumping into anything, its faces can be smooth. Its sharp points can look like they were cut by a jeweler.

A Closer Look

Let's take a closer look! Layers stack up. Faces are flat. Corners are sharp. Edges are straight.

Quick Facts

Quick facts! Crystals that can't grow freely often have no clear flat faces. Layer by layer. Faces follow the pattern. Room helps them grow.

Think Like a Scientist

Now, think like a scientist! Look at a few grains of coarse salt under a magnifier. Pick one grain. Count its flat sides. Draw what you see. Do all the grains look alike?

Outro

Crystals have flat sides and sharp corners because they grow one layer of atoms at a time, each following the same pattern. The faces are the outer layers, and corners are where faces meet. 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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