# Gizmo+-+Waves.pdf - Name Date Student Exploration Waves...

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Name: Date: 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?
2. The two images show side views of ocean waves. How are the two sets of waves different? Gizmo Warm-up Ocean swells are an example of waves . In the Waves Gi]mR , 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 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 is ). ?
2. Click Reset ( ). For the Type of wave , choose Longitudinal . Increase the Amplitude 20.0 cm, and click Play . How would you describe the motion of a longitudinal wave to ? 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.
Activity A: Measuring waves Get the Gizmo ready: x Click Reset . Select Transverse waves. x Set Amplitude to 20.0 cm, Frequency to 1.0 Hz, Tension to 2.0 N, and Density to 2.0 kg/m. Question: How do we measure and describe waves? 1. Observe: Click Play . Observe the motions of the hand and of the green dot in the middle. A. What is the motion of the hand? B. Turn off the Lights on checkbox and observe the green dot. What is the motion of the green dot? C. Follow the motion of a single crest of the wave. How does the crest move? in
2. Measure: With the lights on, click Pause . Turn on Show rulers A. Use the horizontal ruler to measure the horizontal distance between two crests. What is this distance? This is the wavelength of the wave. .