Physics, Science, Middle school Keywords: Density, uphtrust (buoyancy), liquids, gases, pressure, floating, lifting, sinking, overall density, average density Presents the concept of upthrust, and how the relation...

Special introductory offer. Price will increase soon. This Physlics lesson on Friction comes with a powerpoint and worksheet. If you are teaching students from the UK or anywhere in the West, this lesson might be...