Prior Knowledge Questions (Answer 1&2 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. (Note: In this Gizmo, “density” refers to the linear
mass density, or mass per unit length. It is measured in units of kilograms per meter.)
1. Click Play ( ) in the GIZMO. How would you describe the motion of a transverse wave?
Click Pause ( ). Notice the crests (high points) and troughs (low points) of the wave.
Spring model moves up and down as the wave goes from left to right.
2. Click Reset ( ). Choose the Longitudinal wave and increase the Amplitude to 20.0 cm. Click
Play. How would you describe the motion of a longitudinal wave? Click Pause. Notice the
, compressions in the
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