POSSIBLE POINTS: 12 Performance Task #2
Armand is monitoring a large sealed tank by way of a sensor that records the liquid level over time on a graph. He looks at the graph and
claims that the sensor indicates there are waves in the liquid in the tank.
Tank Liquid Level vs. Time
116
113
NA
110
0.5
1.0
1.5
Time (s)
ANSWER PART 1 PART 2 AND PART 3:
• PART 1: EXPLAIN how Armand knows that there is a wave in the tank.
• PART 2: FIND the amplitude, in centimeters, and frequency, in cycles per second, of the wave.
• PART 3: Waves transmit energy from one place to another. IDENTIFY two properties of waves that affect the energy transmitted by a
wave

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