Week_6_Online_Lab_Longitudinal_Waves_Gizmo

Week 6 Online Lab: Longitudinal Waves Gizmo Explore Learning Gizmo: Longitudinal Wave For this assignment, you'll use a Gizmo at the Explore Learning web site. Before you begin:  Be sure you have read the assigned reading for the week.  You may want to print this document so that you can note observations as you work with the gizmo. Later, you can type your answers into the Word document and upload it with this assignment form.  All questions to answer are contained in this document. You don’t need to answer any questions at the Explore Learning site.  This lab has a Prior Knowledge piece, a Warm-Up piece, and Activity A& B with an Extension.  You must answer in a different colored font (-1 point) FINDING THE GIZMO Follow these steps to find the Gizmo:  Go to the Explore Learning website:  If you have not yet enrolled in the class -- In the upper right hand corner, click on Enroll in a Class.  The class code you need is 6FZRUV6SEM (note - these are all capital letters).  Click on Continue.  If you have used the Explore Learning site before you should be able to log in using your MNOHS username and password (for example, mnohs10ajones / piano227). If you have never used Explore Learning before, you’ll need to register using your MNOHS username and password with the class code. In other words, the class code is only needed once!  Once inside the Physics course, look for the Gizmo called Longitudinal Wave and click on Launch Gizmo. Vocabulary: antinode, compression, displacement, frequency, interference, longitudinal wave, medium, node, rarefaction, standing wave Prior Knowledge Question (Do this BEFORE using the Gizmo.) In many science fiction movies, an evil alien spaceship explodes with an enormous KABOOM!! Suppose you were floating in space at a safe distance from a large explosion such as the supernova at left. Do you think you would you hear anything? Explain. I don’t think you would be able to hear anything because, the sound doesn’t have anything to vibrate to make the noise in space. Gizmo Warm-up No sounds can be heard in outer space because sound waves require a medium, such as air, to travel through. Sound waves are examples of longitudinal waves, or waves in which particles move back and forth in the same direction as the wave. You can use the Longitudinal Waves Gizmo™ to explore the behavior of sound waves. In the Gizmo, an air-filled tube contains 24 evenly-spaced, airtight dividers. To begin, select the Pulsed waves setting and the Open tube. Set the Strength to 1.00. Deselect the graph options at lower right. 1. Click Play ( ) to set off the firecracker by the left end of the tube. What do you see? The wave oscillated left to right and then back, it then dipped below 0 on the second round, and every time after that. 2. Do any individual air molecules travel the length of the tube? Yes I think so. How do you know? The airtight dividers don’t block the air molecules from traveling through them. This study source was downloaded by from CourseH on 11-18