HS-PS2-4

Use mathematical representations of Newton's Law of Gravitation and Coulomb's Law to describe and predict the gravitational and electrostatic forces between objects.

  1. Physics

    Einstein taught us: It’s all ‘relative’

    One hundred years ago, a German physicist shared some math he had been working on. In short order, his theory of relativity would revise forever how people viewed the universe.

    By Tom Siegfried
  2. Earth

    How Earth’s surface morphs

    Partly melted rock acts like grease to help huge masses of the planet’s surface slip up, around and down.

    By Kathiann Kowalski