Ever wonder how airplanes fly? I mean they sometimes fly at speeds not much faster then a fast car on the interstate yet they achieve flight through a process called "lift" that is based on this demonstration of the Bernoulli's principle. First observed in the 1700s in the study of fluid dynamics this principle describes how the increase of speed is proportional to the decrease of pressure. Notice how the ball in the video is pulled toward the flowing steam of water. This same pull is what provides lift for an aircraft wing as the surface area of the wing is larger on top then on bottom, causing the air on the top of the wing to flow faster as the plane cuts through the air. This increased speed on top causes decreased pressure, essentially sucking the plane up into the air. The same principle causes the roof of buildings to sometimes get lifted right off its structure during extreme high winds.
On Monday, we went to the forest and collected lots of samples of leaves and dirt for yeast (a fungus)! It many ways it reminded me of the forests back home. Well, except for the bitting ants. I think nature could live without those. #OutdoorScience#Yeast#DownWithAnts
@mrshardysclassroom16 & @mrshammsclass continued their outdoor learning this afternoon with the help of some rain! "Did you make a boat that can float? Can your boat support some weight?" #sjasd#outdoorlearning#outdoorscience