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Book 20, Question 118 · Video

Why Do Some Mountain Forests Have Bare Stripes?

Video · 1:51 · Crafty Clover explains, from A Million Whys Book 20

Some mountain forests have long, bare stripes running through them. These stripes are avalanche paths, where snow slides down often and clears away the trees.

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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 some mountain forests have bare stripes?

The Big Idea

Some mountain forests have long, bare stripes running through them. These stripes are avalanche paths, where snow slides down often and clears away the trees. Let's look at the clues they leave behind, and what lives there.

Snow Slides Often

Step one: snow slides down the same path. On some steep slopes, snow comes down again and again over the years. The sliding snow knocks down or clears off the big trees, so only small plants can survive.

Trees Cannot Stay

Step two: big trees cannot grow. Without tall trees, there is more sunlight on the ground, and more room for plants. Shrubs, flowers, and grasses grow back there each summer.

Animals Visit

Step three: wildlife visits. Grizzly bears often feed in these open stripes in spring. So these paths are good places to spot wildlife, from far away with binoculars.

A Closer Look

Let's take a closer look at the stripes! Forest stands on both sides. The bare stripe is where snow slides down. Flowers and grasses grow back each summer. And hungry animals, like bears, come to eat.

Quick Facts

Quick facts! Avalanche paths can be a good sign of where snow slides most. Flowers and shrubs grow back each summer. Bears and other animals feed there in spring. Hikers avoid steep chutes in winter and early spring.

Think Like a Scientist

Now, think like a scientist! Draw a forested mountain with a bare stripe. Label what grows back in the stripe. Add one animal that might visit. Show it to a grown-up.

Outro

A bare stripe tells a snow story. Science is amazing! 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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