TV.com will be making some changes to our user base starting Feb 25, 2015. For more information click here

Bill Nye: The Science Guy

Season 1 Episode 2

Earth's Crust

1
Aired Unknown Sep 17, 1993 on Disney Channel
9.5
out of 10
User Rating
4 votes
0

EPISODE REVIEWS
By TV.com Users

Episode Summary

EDIT

Don't just go with the flow. Settle down on the crust.
Imagine a world without any crust. There would be no pies, just goopy filling, no bread, no hamburger
buns, and no you or me. That's right. You, and every living thing we know of, live on or in the Earth's crust.
And, living things need the Earth's crust to survive. Let's look at the science of the surface.
By carefully studying the Earth's surface, scientists have discovered that the Earth is made up of gigantic
layers. At the center of the Earth, there is a core � a big ball of solid metal mostly iron.
The core is surrounded by a layer of liquid iron and other minerals. We usually just call it the outer core.
The next layer, around the outer core is called the mantle. You may have seen a mantle above a fireplace.
Well, the mantle is above the Earth's hot core places. The mantle is gooey hot nearly melted rock that
flows the way asphalt does on a hot summer day. Scientists often say that the mantle is plastic. It bends.
We call the mantle's nearly liquid rock magma. When magma flows onto the surface, on top of the crust,
we call it lava.
The Earth's crust is thin, only about 100 kilometers thick. If the Earth were the of a peach, the crust
would only be as thick as the peach's skin (and not as fuzzy). If the Earth hadn't cooled enough for the
crust to form on its surface, we wouldn't be here. Neither would any living thing we know of.
Scientists have never been able to dig or drill down through the crust to the mantle. Driving 100 kilometers
is easy. Drilling that far through solid rock is hard. Well, it's solid rock. But, we can study the inside of the
Earth by observing volcanoes and geysers. The heat that melts rock into magma, and turns underground
water into steam, comes from under the crust.
We haven't even begun to scratch the surface. Watch Bill Nye the Science Guy to find out more about
"The Earth's Crust."

moreless

Who was the Episode MVP ?

Tuesday
No results found.
Wednesday
No results found.
Thursday
No results found.
SUBMIT REVIEW

    Trivia, Notes, Quotes and Allusions

    FILTER BY TYPE

    • TRIVIA (0)

    • QUOTES (0)

    • NOTES (3)

      • The Big Ideas!
        The Earth's crust is different from what's inside.
        The crust of the Earth is very thin.
        All living things on Earth live on or in the crust.

      • Books of Science!
        "Planet Earth/Inside Out"
        by Gail Gibbons.
        Published by Morrow Junior Books, 1995.
        "Drifting Continents, Shifting Seas"
        by Patrick Young.
        Published by Franklin Watts, 1976.

      • Did You Know That?

        If the Earth were the size of an egg, the crust would be as thin as an eggshell?

        There are volcanoes in Iceland (which is actually quite green -- it's Greenland that's icy)?

        Before lava works its way out of a volcano, it's called magma?

    • ALLUSIONS (0)

    More
    Less