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    You will use this hands-on activity to help middle school students learn how light refracts.

    Engineers are using nanotechnology to create promising new metamaterials that bend and refract light and sound waves in ways not found in nature. There are many potential applications for these materials, one of which is to create "invisibility  fields" for individuals or machinery.

    In the media carousel above you will also find:

    • photographs to guide you in accurately setting up the laser refraction challenge
    • the "Build the Future" introductory video to be shown to students at the beginning of your presentation
    • the PowerPoint presentation that highlights the many different types of engineers
    To prepare for your classroom visit, about two weeks in advance, review the information in the Engineer Guide and the materials provided for this activity.  
  • Term Part of Speech Definition Encyclopedic Entry
    animal migration Noun

    process where a community of animals leaves a habitat for part of the year or part of their lives, and moves to habitats that are more hospitable.

    climate Noun

    all weather conditions for a given location over a period of time.

    Encyclopedic Entry: climate
    elevation Noun

    height above or below sea level.

    Encyclopedic Entry: elevation
    endangered species Noun

    organism threatened with extinction.

    Encyclopedic Entry: endangered species
    habitat Noun

    environment where an organism lives throughout the year or for shorter periods of time.

    Encyclopedic Entry: habitat
    migrate Verb

    to move from one place or activity to another.

    prey Noun

    animal that is hunted and eaten by other animals.

    region Noun

    any area on Earth with one or more common characteristics. Regions are the basic units of geography.

    Encyclopedic Entry: region
    species Noun

    group of similar organisms that can reproduce with each other.

    temperate climate Noun

    temperature, rainfall, and other weather conditions that fall between tropical and polar.

    territory Noun

    land an animal, human, or government protects from intruders.