HS-PS4-1

Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.

  1. Physics

    Explainer: What is a laser?

    Lasers are the brightest source of light on Earth and produce the purest form of color possible.

    By Amanda Leigh Mascarelli
  2. Animals

    A Sense of Danger

    Can animals warn us if an earthquake or some other natural disaster is about to strike?

    By Emily Sohn