User login


Search Results


Showing results (1 to 3 of 3)

  • Thumbnail
    NOAA
    Add to list Details
    In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick. Learners...

    1 cent - $1 per group Ages 8 - 18 5 to 10 minutes
  • Thumbnail
    NOAA
    Add to list Details
    In this activity, learners discover that as the salinity of water increases, the density increases as well. Learners prove this by attempting to float fresh eggs in saltwater and freshwater. This...

    1 cent - $1 per group Ages 6 - 14 5 to 10 minutes
  • Thumbnail
    NOAA
    Add to list Details
    In this quick activity, learners observe how salinity and temperature affect the density of water, to better understand the Great Ocean Conveyor. Learners observe what happens when they add...

    1 cent - $1 per group Ages 6 - 14 5 to 10 minutes

Current filters


  • Query parameter - amp;chemical - not supported

  • Age Range

  • Source Institution

  • Resource Type

  • Materials Cost

  • Informal Category

  • Learning Time