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Showing 61-80 of 80 Resources
  • The Day the Mesozoic Died

    The Day the Mesozoic Died

    Short Films

    (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.

  • Plate Tectonics

    Plate Tectonics

    Animations

    (1 min 16 sec) Plate tectonics is the unifying theory of Earth science.

  • EarthViewer Data Files

    EarthViewer Data Files

    Lessons

    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.

  • The Geologic Carbon Cycle

    The Geologic Carbon Cycle

    Animations

    (6 min 20 sec) CO2 emitted by volcanoes into the atmosphere is removed by a series of chemical reactions related to rock weathering.

  • Greenhouse Effect

    Greenhouse Effect

    Animations

    (2 min 14 sec) Sunlight that warms Earth is re-emitted as infrared radiation, which is absorbed by greenhouse gases and causes further warming.

  • 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.

  • The Principle of Isostasy

    The Principle of Isostasy

    Clips

    (2 min 39 sec) Continents rose in elevation after ice sheets from the last ice age retreated. This suggested that the underlying mantle is pliable.

  • Weighing the Evidence for a Mass Extinction—On Land

    Weighing the Evidence for a Mass Extinction—On Land

    Lessons

    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

    Lessons

    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

    Lessons

    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

    Lessons

    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

    Card Activities

    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.

  • Calculating Iridium Fallout From an Asteroid Impact

    Calculating Iridium Fallout From an Asteroid Impact

    Lessons

    A worksheet in which students calculate how much iridium was released, and eventually deposited all over the Earth, by the impact of the asteroid that caused the K-T extinction.

  • Distribution of Elements in Earth’s Crust

    Distribution of Elements in Earth’s Crust

    Lessons

    A lesson in which students read a passage and answer questions about the information presented, testing their non-fiction reading comprehension.

  • Chemical Signatures of Asteroid Impacts

    Chemical Signatures of Asteroid Impacts

    Lessons

    A lesson in which students analyze the chemical data that led researchers to conclude that the K-T boundary layer contained an extraordinary concentration of iridium. 

  • Film Guides: The Day the Mesozoic Died

    Film Guides: The Day the Mesozoic Died

    Film Guides

    The following classroom-ready resources complement The Day the Mesozoic Died, which tells the story of the extraordinary detective work that led to the stunning discovery that an asteroid struck Earth 66 million years ago, triggering a mass extinction of animals, plants and even microorganisms.

  • Winogradsky columns: Microbial ecology in the classroom

    Winogradsky columns: Microbial ecology in the classroom

    Labs & Demos

    An activity that recreates zones of microbial activity in a glass column. To accompany the lecture series Changing Planet: Past, Present, Future.

  • Stratigraphic Principles

    Stratigraphic Principles

    Clips

    (2 min 21 sec) Dr. John Shea demonstrates the two main principles in the study of rock layers: superposition and association.

  • Rift Valleys of Africa and Plate Tectonics

    Rift Valleys of Africa and Plate Tectonics

    Clips

    (2 min 14 sec) African rift valleys were formed by the separation of tectonic plates. Water flows down to the valley floors, creating rivers and lakes.

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