Develop a model to illustrate how Earth's internal and surface processes operate at different spatial and temporal scales to form continental and ocean-floor features.

  1. Earth

    A volcano wakes up

    Earthquakes, small eruptions, and a new lava dome unsettle Mount St. Helens.

  2. Earth

    Distant quake changes geyser eruptions

    An Alaskan earthquake changed the timing of geysers thousands of miles away.