Tetrahedral Kite Vocabulary Lesson and Notes Air Friction Force Slows - Lifts Attraction Between Force Mass x Gravity Force Quick – Burst Energy Tool Angles Force - Up Thrust Drag Lift Weight Gravity Protractor Polygon Triangle Polyhedron Tetrahedron Edge Faces   Vertex Bridle Dimensions Bernoulli’s principle Angle of attack Newton’s Second Law Triangular Solid 4 Faced 3d One side of Polyhedron Polygon Many sided 2d 3 sided Polygon Many Faces 3d One side of Polygon Sizes/Measurements create Corner/Point 2+ Things Meet Loop Knot/Clip Angle of Attack Faster Fluids Less Pressure 10 ° Lift F = Mass x Acceleration

CALCULATING AREA AND VOLUME AREA = (bh÷2) VOLUME = (bh÷2)·H÷3 Using the following formulas, find the area of the small and large triangle, as well as the volume of the small and large tetrahedron. (REMEMBER UNITS!!   AREA = (bh÷2) VOLUME = (bh÷2)·H÷3 (One Cell) b = base: ____” (Total Assembled Kite) b = base: ____” (One Cell) h = height: ____” (Total Assembled Kite) h = height: ____” (One Cell) H = 3-D height: ____” (Total Assembled Kite) H = 3-D height: ____” a. (One cell/Tetrahedron) What is the area of the triangle? _____________ b. (One cell/Tetrahedron) What is the volume of the tetrahedron? _____________ c. (Total Assembled Kite) What is the area of the large triangle? _____________ d. (Total Assembled Kite) What is the volume of the large tetrahedron? _____________ 10 25 9.5 24 9 23 47.5 in2 142.5 in3 300 in2 2300 in3

Tetrahedral Kite Open Response Questions 1. What is the purpose of the bridle? Would it work in another location on the kite? Why or why not?   2. What is Newton’s Second Law? How does it apply to the flight of your kite? 3. On the tetrahedral kite pictured on the open response answer sheet, label the following: a vertex, a face, a polygon, a tetrahedron and then draw a bridle on it. 4. Why does a tetrahedral kite fly? Angle of Attack Bernoulli’s Principle Thrust Force = Mass x Acceleration > Mass = > Force Needed Angle of Attack Bernoulli’s Principle Thrust