(upbeat music) - Good morning scientists.

I'm Courtney Cochran.

Who's ready for another science lesson?

Today we're talking about erosion.

I'm gonna define that for you in just a minute.

But first, have you ever thought about how much power wind and water have?

Take a look at these fossils, for example.

These are fossils of ferns that were formed when wind and water, and maybe even ice carried soil on top of the ferns and buried them there for years and years.

The pressure created these imprints in these rocks.

Wow.

That is so cool.

Wind and water aren't the only things that can cause erosion.

Erosion is when soil is moved across the earth.

And ice can also do that exact same thing.

Let's take a look at a picture of a glacier.

This glacier looks like it's just snow on a mountain, but it's actually a body of ice moving very, very slowly.

And as it moves, it carries that soil and rocks and earth with it.

That's erosion.

Today, we're gonna do an experiment all together.

I need you to draw a picture of this box with the soil in it.

Okay.

Let me give you a second to draw that picture.

Now I want you to draw a new picture.

This one's gonna show your prediction of what happens when I pour this water on this soil.

Ready?

Draw your prediction.

Okay.

Now let's see what happens.

Well, were your predictions correct?

Did you predict that the water would carry some of the soil down the hill?

It's so great job.

That's a wonderful demonstration of erosion.

When you go out in your neighborhood today, I want you to look for signs of erosion.

Look for ways that the wind, water, and maybe even ice or snow have moved the soil around.

Great job today.

I can't wait to see you again next time, but until then, remember, (upbeat music) never stop exploring, never stop discovering.