Name: __________________________ Period: ________ Marble Launch Lab PROBLEM/PURPOSE: At which angle do you think the marble will travel the greatest distance? HYPOTHESIS: If the marble is launched at ____°, then it will travel the farthest. MATERIALS: Safety goggles, Marble launcher, 1 marble, Tape measure, and masking tape . PROCEDURE: 1.) Identify the parts of the marble launcher. Place launcher on the ground, and put a piece of masking tape on the ground marking the placement of your launcher (always place launcher on tape). 2.) Measure the distance all the way across, marking the concrete floor every 100 cm with a piece of masking tape. 3.) Use the fifth slot of the barrel to launch the marble for each trial. Your group is responsible for recording ONLY THE ANGLES ASSIGNED TO YOU! 4.) Practice launching for accuracy and then record your closest 2 trials on the table below. 5.) Create a line graph on the next page (Table 2) using the data from Table 1. DATA/OBSERVATIONS: Data/Observations: In the table below record your two best trials for each launch angle; please note that your group will only be conducting 2 different trials at 4 different angles (8 Total). You will share your data with the rest of the class at a later time. Use a highlighter to mark the launch angles your group is responsible for recording. Table 1: Launch angle and distance data Groups Launch angle (degrees) Distance (meters) Distance (meters) 1 and 3 2 and 4 Groups Launch angle (degrees) Distance (meters) Distance (meters) 5 and 7 6 and 8 1, 2 10 (394) 242 366 400 415 5, 6 50 751 764 650 600 1, 2 15 (475) 480 466 480 433 5, 6 55 746 762 740 712 1, 2 20 522 527 480 433 5, 6 60 734 723 703 742 1, 2 25 617 613 566 5, 6 65 700 696 420 410 3, 4 30 768 750 709 700 7, 8 70 630 135 500 490 3, 4 35 804 809 763 769 7, 8 75 248 479 400 410 3, 4 40 820 817 731 735 7, 8 80 350 352 316 300 3, 4 45 789 800 800 822 7, 8 85 70 215 138 150 600 500 400 100 200 300 Distance (cm) 700 800 900 Table 2: _______________________________________________ 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 (x-axis title) _____________________Angle (degrees)_______________ Questions/Conclusions: 1. Look at your graph, at what angle does the marble reach the greatest distance? _________________________ 2. Which variable is the independent variable? Which is the dependent variable? _______________________________________________________________________________________________ _______________________________________________________________________________________________ 3. You are challenged to launch a marble to travel a distance of 4.00 meters. At what angle will you set the launcher? _______________________________________________________________________________________________ _______________________________________________________________________________________________ 4. Explain why two angles can be used to reach the same distance. _______________________________________________________________________________________________ _______________________________________________________________________________________________