Exam (elaborations) Gizmos (Student) Exploration Waves

Student Exploration: Waves Vocabulary: amplitude, compression, crest, frequency, longitudinal wave, medium, period, power, rarefaction, transverse wave, trough, wave, wavelength, wave speed Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. A buoy is anchored to the ocean floor. A large wave approaches the buoy. How will the buoy move as the wave goes by? The buoy will move because the wave will push it. 2. The two images show side views of ocean waves. How are the two sets of waves different? The two images showing the two different sides of the ocean waves are different because the first image of the wave is higher than the second image of the ocean wave. Gizmo Warm-up Ocean swells are an example of waves. In the Waves Gizmo™, you will observe wave motion on a model of a spring. The hand can move the spring up and down or back and forth. To begin, check that the Type of wave is Transverse, Amplitude is 20.0 cm, Frequency is 0.75 Hz, Tension is 3.0 N, and Density is 1.0 kg/m. Click Play ( ). 1. How would you describe the motion of a transverse wave? In my opinion, I think that the motion of this transverse wave is moving at right angles. Because, the speed stays the same and the wave power doesn’t change either. Click Pause ( ). Notice the crests (high points) and troughs (low points) of the wave. 2. Click Reset ( ). For the Type of wave, choose Longitudinal. Increase the Amplitude to 20.0 cm, and click Play. How would you describe the motion of a longitudinal wave? I think, that the motion of this longitudinal wave is a wave that is going said to side but in a slow speed. Click Pause. Notice the compressions in the wave where the coils of the spring model are close together and the rarefactions where the coils are spread apart.