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Showing 21-40 of 45 Resources
  • Finding the Crater

    Finding the Crater

    Activity

    This hands-on activity requires students to “visit” different K-T boundary sites.

  • Geological History of Oxygen

    Geological History of Oxygen

    Click & Learn

    Explore the changes in oxygen levels throughout Earth’s history and discover their impact on life.

  • Paleoclimate: A History of Change

    Paleoclimate: A History of Change

    Click & Learn

    Earth's climate is a complex system controlled by many factors. This Click and Learn will examine the two most important factors: solar radiation and the composition of Earth's atmosphere. Worksheet available in Spanish.

  • The Day the Mesozoic Died

    The Day the Mesozoic Died

    Short Film

    (33 min 43 sec) The disappearance of the dinosaurs at the end of the Cretaceous period posed one of the greatest, long-standing scientific mysteries. This three-act film tells the story of the extraordinary detective work that solved it. Also available in Spanish.

  • EarthViewer Data Files

    EarthViewer Data Files

    Activity

    Summaries and links to the data files used to create the charts in EarthViewer, including the APK file to manually install the app.

  • Deep History of Life on Earth

    Deep History of Life on Earth

    Click & Learn

    The record of life on Earth stretches over 3 billion years. Deep time and Earth history are keys to understanding the present.

  • Daly's Model of Subduction

    Daly's Model of Subduction

    Animation

    (2 min 19 sec) An early model of continental drift proposed that parts of continental plates can sink into the mantle, allowing for movement.

  • Continental Movement Over the Past 200 Million Years

    Continental Movement Over the Past 200 Million Years

    Animation

    (1 min 1 sec) The breakup of a supercontinent into several smaller continents explains the distribution of fossil and geologic evidence.

  • Arctic Island Was a Tropical Island 500 Million Years Ago

    Arctic Island Was a Tropical Island 500 Million Years Ago

    Animation

    (47 sec) Reconstructing past continental plate movements reveals the island of Spitsbergen was tropical 500 million years ago.

  • How To Find a Dinosaur

    How To Find a Dinosaur

    Scientists at Work

    (4 min 5 sec) Dr. Lyson describes dinosaur digs as well as his focus on prehistoric turtle fossils.

  • Isostasy is Key to Understanding Continental Drift

    Isostasy is Key to Understanding Continental Drift

    Clip

    (50 sec) The concept that continents float on a pliable mantle is an important element of the theory of continental drift.

  • Discussion with Students on The Day The Mesozoic Died Short Film

    Discussion with Students on The Day The Mesozoic Died Short Film

    Lecture

    (42 min 27 sec) Students discuss the short film after a screening at the 2012 Holiday Lectures on Science.

  • Building Scientific Knowledge: The Story of Plate Tectonics

    Building Scientific Knowledge: The Story of Plate Tectonics

    Lecture

    (57 min 59 sec) The theory of plate tectonics took many decades to become accepted. The process by which it was finally accepted provides a fascinating glimpse into how scientists build new scientific consensus.

  • The Deep History of a Living Planet

    The Deep History of a Living Planet

    Lecture

    (1 hr 28 min 29 sec) Microbes have been the dominant life form throughout Earth's history. Eukaryotes and animals evolved only after microbes evolved oxygen-generating photosynthesis.

  • Changing Planet: Past, Present, Future

    Changing Planet: Past, Present, Future

    Lecture

    Has Earth changed over deep time? How did Earth shape life and life shape Earth? What does Earth's climate in the distant past tell us about the future?

  • Weighing the Evidence for a Mass Extinction—On Land

    Weighing the Evidence for a Mass Extinction—On Land

    Activity

    A lesson in which students analyze graphs and data on pollen grains and fern spores to form a picture of the living landscape before and after the K-T mass extinction.

  • Determining the Size and Energy of the K-T Asteroid

    Determining the Size and Energy of the K-T Asteroid

    Activity

    A lesson in which students calculate the mass, size, and kinetic energy of the K-T asteroid based on the total abundance of iridium in the K-T boundary layer.

  • Classroom Activities: EarthViewer

    Classroom Activities: EarthViewer

    Activity

    EarthViewer was designed as an interactive learning tool. Download the PDF linked in the right hand column for some ideas on how to use the app in your class, or click on the EarthViewer link to find out more about the app.

  • Following the Trail of Evidence

    Following the Trail of Evidence

    Activity

    A worksheet in which students write down the evidence that led to the discovery that an asteroid struck Earth about 66 million years ago, causing a mass extinction. Also available in Spanish.

  • Weighing the Evidence for a Mass Extinction—In the Ocean

    Weighing the Evidence for a Mass Extinction—In the Ocean

    Activity

    A hands-on activity in which students see first-hand the difference in foraminifera fossils below and above the K-T boundary. Also available in Spanish.

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