Name _____________________________________ Date _____________ Period ___________ Physical Science Paper Airplane Lab American aviation pioneers Orville and Wilbur Wright invented the first successful selfpropelled airplane. In the 1880s and 1890s the two brothers published a newspaper and later formed the Wright Cycle Company to build and sell bicycles in Dayton, Ohio. The brothers’ interest in aviation started in 1896, when they learned of early European experiments in flight. They began a program for building an airplane by first conducting tests with kites and then gliders. Before attempting powered flight, they solved the problems of controlling the plane’s motion in rising, descending, and turning. A beach near Kitty Hawk, NC, was selected for flight tests based on the advice of the U.S. Weather Bureau. After making more than 700 successful glider flights at Kitty Hawk in 1902, the Wright brothers faced the problem of finding an engine light enough and powerful enough to get their plane off the ground. No automobile manufacturer would accept the job, so the Wright brothers, along with Charles Taylor, designed and built their own 12-to-16 horsepower engine and propeller for their plane, which was originally named “Flyer I,” but commonly referred to as the ‘Kitty-Hawk.’ On December 17, 1903, Orville achieved the first successful flight ever made in a self-propelled heavier-than-air craft. In order for their plane to get off the ground the Wright brothers needed to do many experiments using what we know as the scientific method. The scientific method is the way that scientists gather information and test ideas. In this lab you will examine the scientific method and run some of your own tests using something you probably know a great deal about, paper airplanes. You will create your own paper airplanes, measure them for time of flight, and distance traveled, just as Orville and Wilbur must have done when they started in the field of aviation using the scientific method. OBJECTIVE Demonstrate the principles of the scientific method using paper airplanes. Measure the time of flight and the distance traveled. Calculate the average speed of the plane. MATERIALS Several sheets of plain paper--including various types/thickness Ruler or meter stick Stopwatch PROCEDURE Part I. Observation A. Construct an airplane out of paper. This will be the first test plane or the control. B. In an approved area throw the plane and time the interval in seconds from the time it leaves your hand until the time it touches the ground. Measure the distance, in the direction of intended flight, in meters from where you threw the plane to where it landed. Record your measurements in the data table. C. Repeat letter B two more times so that you have three recordings. Take the average and record them in the data table. D. On the data table, make observations about the flight. Your observations must be specific (for example: did it turn up, go down, turn right or left, glide well, take a nose dive, etc.?). E. Discuss with your lab partner the reasons that your plane did what it did. List the possible reasons after the observations. Next, answer: What can you do to make your plane fly farther? Part II. Forming a Hypothesis From your observations, you must next form a hypothesis. Remember a hypothesis is a possible answer to a question, a solution to the problem, or even an educated guess. What is the question or problem you are trying to solve? The question your hypothesis must answer is “What can you do to make your plane fly farther?” Keep your hypothesis short and list it below. ______________________________________________________________________________ ______________________________________________________________________________ Part III. The Experiment An experiment is a controlled procedure designed to test a hypothesis. A. Design a new plane. To test your hypothesis you must change only one aspect of your plane at a time. Construct your new plane so that only one aspect has changed. B. Test your new plane to see if your hypothesis is correct. Test this plane the same way you tested your plane in Part I of this lab. You will conduct and record three trials. C. Record your measurements and observations in the data table. Part IV. Make Observations and revise Hypothesis A. Was your hypothesis Correct? __________ Did the averages improve? ____________ List observations from the latest flight on the wing of the airplane. B. If your hypothesis was incorrect, you must make a new hypothesis and start again at Part I, step A. However, if your hypothesis was correct, try to improve your plane’s flight in some other manner and form yet another hypothesis. State your new hypothesis here. ___________________________________________________________________________ ___________________________________________________________________________ C. Retest your new plane to see if your new hypothesis is correct. Test this plane the same way you tested the plane in Part I. of this lab. Be sure to list observations on the wing of the airplane D. Record your measurements and observations in the data table. E. Continue to revise your hypothesis and retest as many times as necessary until you feel that your hypothesis can stand the test of time. Be sure to list each set of observations and results on the data table and have it ready to hand in. Part V. State Your Theory A hypothesis that has been tested and supported many times is called a theory. In this lab your results cannot possibly be tested may times. So, taking that into account, state your theory. ______________________________________________________________________________ ______________________________________________________________________________ CONCLUSIONS 1. What relationship did the size of your plane’s wings have on the distance it flew? __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ 2. List what changes you made to your planes and how each change affected their flight. __________________________________________________________________ __________________________________________________________________ 3. Could you have had differences in the angle the plane was thrown and/or did more than one person throw the plane? __________________________________________________________________ 4. How did you or how could you account for the differences mentioned in the previous question? __________________________________________________________________ __________________________________________________________________ 5. In which step did you have a control test? __________________________________________________________________ 6. Why is it that instructions said to change only one aspect of your plane each time? __________________________________________________________________ __________________________________________________________________ EXTENSION Have your teacher set up a competition among your class and/or with other classes to see who’s plane can fly the farthest. DATA TABLE Flight # 1 2 3 Average 1-3 4 5 6 Average 4-6 7 8 9 Average 7-9 10 11 12 Average 10-12 13 14 15 Average 13-15 Distance Traveled Time of Flight Average Speed Observations