Scrapheap Challenge: Destroyer links, from Channel 4


		More Info School for Champions: Fluids www.school-for-champions.com/science/fluids.htm What is the flexible shape of a fluid? How is fluid pressure different from solid pressure? How does an object float in a fluid? School for Champions: Laws of Motion www.school-for-champions.com/science/motionlaws.htm Why do things move in a straight line? Why is a heavy moving object so hard to stop? What is energy? NASA for Kids: How air pressure affects you http://kids.earth.nasa.gov/archive/air_pressure/index.html All about air pressure, atmospheric and otherwise. Science Joywagon: Pressure www.sciencejoywagon.com/physicszone/lesson/02forces/pressure/pressure.htm Basic introductions with pictures and animations. Science Joywagon: Forces www.sciencejoywagon.com/physicszone/lesson/02forces/default.htm Science Joywagon: Newton's Third Law www.sciencejoywagon.com/physicszone/lesson/02forces/3rdlaw/index.htm Ship Technology: Water-Jet Propulsion www.ship-technology.com/contractors/propulsion/waterjet.html How impeller engines work. The Evolution of the Screw Propeller www.cogulus.com/screw.html From the paddle wheel to the screw propeller.