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Floating or sinking has to do with the amount of water pushed out of the way. Any boat will sink if you put enough stuff inside it -- just like your experiment showed. Small, heavy things like a marble or a rock cannot float because they cannot push enough water out of the way to be the same as how much they weigh..
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www.newton.dep.anl.gov/askasci/phy00/phy00291.htm
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Buoyancy - Wikipedia, the free encyclopedia
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In physics, buoyancy (pronounced /ˈbɔɪ.ənsi/ ) is the upward force that keeps things afloat. The net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the bod...
en.wikipedia.org/wiki/Buoyancy
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A unique fishing rope comprising floating and sinking portions. The sinking portion blended yarns made up of a blend of first and second non-metallic synthetic filaments in proportions to ... FIG. 3a is a sectional view showing one strand of a sinking section of the rope embodying the principles of the present invention;
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www.freepatentsonline.com/5131218.html
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Density: Floating, Sinking, and Suspending; Ayodeji Griffin Robert Fulton Elementary School; 5300 South Hermitage Avenue; Chicago IL 60609; (312) 535-9000; Objective: This mini-teach is designed for the primary and intermediate grade levels.
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www.iit.edu/~smile/ch9505.html
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Sinking And Floating; Tunya Alexander Frank L. Gillespie School; 9305 S. State St; Chicago IL 60643; (312)535-5065; Objectives: The mini-teach is adapted to grade levels 3-6 and special education. D. Floating Boat; 1. 20 paper clips ; 2. aluminum foil; 3. ruler; 4. bucket of water; Strategy: A. Deep-water diver;
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www.iit.edu/~smile/ph9401.html
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A Cartesian Diver is a scientific toy that has been used for the past several centuries to demonstrate the principles of floating and sinking.
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www.schools.ash.org.au/stkierans-manly/Classes/Yr6/6B/C...
www.schools.ash.org.au/stkierans-manly/Classes/Yr6/6B/Cart/diver.html
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The scientific principles you learn in project will help you design your sub later. Directions; 1.Use the marking pen to draw a horizontal line on the beaker 4 cm from the top. 2.Fill the beaker to the marked line with tap water.
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www.familycorner.com/education/sinkfloat.shtml
www.familycorner.com/education/sinkfloat.shtml
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Watch a video from Bambaloo explaining Floating and Sinking ... Teachers, Use this printable Unit on Floating and Sinking in your classroom! ... Try this Floating and Sinking experiment...
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www.gigglepotz.com/krc_floating.htm
www.gigglepotz.com/krc_floating.htm
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Elenco Water Lab Science Kits 8 years Full color, simple graphic instructions - no reading required Make your own sailboat, submarine, hydraulic elevator, and siphons while exploring the principles of floating, sinking, hydraulics, weight and volume! ... Home > Shop By Age > 8-10 Years > Science Kits 8 years > Elenco Water Lab;
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www.thekidstoystore.com/elenco-water-lab.html
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