Slide 1 / 9 Slide 2 / 9 4th Grade Sediment Fossil Surprise Activity - - PowerPoint PPT Presentation

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4th Grade

Sediment Fossil Surprise Activity Slides

2015-10-02 www.njctl.org

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These slides are from National Geographic and can be found at:

http://education.nationalgeographic.com/activity/sediment-fossil-surprise/

They are the "A Fossil Forms" slides.

Citation for Slides

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A tylosaurus dies and sinks to the seabed.

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Animals and bacteria remove its flesh.

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Over time, many layers of sediment bury the remains.

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Slowly, the sediments turn into rock and preserve the remains as a fossil.

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Millions of years pass. Earth's plates shift and the ocean floor is uplifted. Waters retreat and seabeds become dry land.

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More time passes. Natural forces like wind and water erode layers

• f sedimentary rock, exposing the fossil.