WATCH OUTTAKES HERE: testu.be/1dxciEe It's battle of the boats as Tara and Anthony pair off with Patrick Norton and Michael Hand of DIY Tryin' to see if cardboard really can hold and float two people in water. Watch to see how Patrick and Michael planned and built the boats here: revision3.com/diytryin/cardboard-boat-build-off Join Anthony Carboni and Tara Long as they turn the world around them into a giant science experiment. New videos every Wednesday! Materials Needed: - Cardboard - Gorilla or Duct Tape - Box Cutter - Liquid Nails or Wood Glue Experiment Tips: - Be sure to seal all exposed holes and cracks in your cardboard boat. The less ways for water to leak in, the better! - We found the flat-bottom boat to have better, though the wedge-shape boat was faster. - Each boat lasted ~20 minutes of hard use in the water. Buoyancy www.brainpop.com/science/motionsforcesandtime/buoyancy/preview.weml The buoyancy of any object in water depends on its volume (the amount of space it takes up) and density (how much mass it has per unit of volume) compared to the density of the water. Objects with large volumes and low densities tend to be quite buoyant. Displacement science.howstuffworks.com/buoyancy-info.htm If a wooden board is placed in a bathtub full of water, some of the water will spill over the side. The amount of water pushed aside by the board is called the board's displacement. The board sinks only until it has displaced a volume of water whose weight equals the weight of the board. Download the New TestTube iOS app! testu.be/1ndmmMq Watch Hard Science on TestTube: testtube.com/hardscience Subscribe now! www.youtube.com/subscription_center?add_user=hardscienceshow Watch extra footage from Hard Science here: testtube.com/hardscienceextras Follow Hard Science on Twitter: twitter.com/hardscienceshow Like Hard Science on Facebook: facebook.com/hardscienceshow Add Hard Science on Google+: goo.gl/BKfY3U Anthony on Twitter: twitter.com/acarboni Tara on Twitter: twitter.com/taralongest Special thanks to our Science Advisors! Kishore Hari: bayareascience.org Marc "Zeke" Kossover: www.kossover.net Very special thanks to the Handlery Union Square Hotel and Staff! sf.handlery.com Hard Science Crew: Executive Producer: Barry Pousman Producer: Nicolette Bethea Shooter: Michael Baca Second Shooter: Matt Piniol Production Assistant: Kendall Long Editors: Courtney Sid & Conor Gordon

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