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Book 18, Question 59 · Video

What Makes Musk Ox Wool So Warm?

Video · 1:54 · Crafty Clover explains, from A Million Whys Book 18

Musk ox wool is so warm because musk oxen wear two coats at once! A long, shaggy outer coat blocks wind and snow. A super-soft wool layer underneath holds in body heat.

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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. What makes musk ox wool so warm?

The Big Idea

Musk ox wool is so warm because musk oxen wear two coats at once! A long, shaggy outer coat blocks wind and snow. A super-soft wool layer underneath holds in body heat. Together, they are an Arctic superpower!

Shaggy Outer Coat

Step one: the shaggy outer coat. The long outer hair can reach almost to the ground. It blocks wind and sheds snow, like a long winter coat with a big, shaggy hem.

Soft Wool Layer

Step two: the soft wool underneath. Underneath is a super-soft wool called qiviut. It grows thick in winter, and it is said to be about 8 times warmer than sheep's wool.

Together

Step three: put them together. The two layers block wind and hold in body heat. In spring, the soft wool sheds, so the musk ox stays comfortable.

A Closer Look

Let's take a closer look! A musk ox is a big, sturdy Arctic animal with a woolly look. Its long outer hair blocks wind. Its soft qiviut keeps heat close to its body. Two layers keep this ox toasty.

Quick Facts

Quick facts! Musk oxen have lived in the Arctic since the time of woolly mammoths. When danger is near, adult musk oxen stand together to protect the babies. Qiviut is gathered gently from shed wool lying on the ground. Watch wild animals only from far away.

Think Like a Scientist

Now, think like a scientist! Put on a sweater, then wear a windbreaker over it. Feel how the outer layer blocks the wind. That is the same idea as a musk ox's two coats! Share what you discover with a grown-up.

Outro

Two coats make musk ox wool super warm. Science is amazing! 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