
Unit 4 Review
Authored by ASHLEE Hope Spurgeon
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
1. A few boys are sledding on snow in their favorite park. They notice that it is harder to hear someone shouting from the top of the hill to the bottom than it is in the summer. What factor is most likely affecting the sound of their shouting?
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
2. The diagram below shows a sound wave traveling through air. Which terms best describes points N and M as the wave progresses?
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
3. Which of the following is the best example of resonance?
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
4. Which of the following accurately describes a difference between an audio CD and a digital file?
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
5. Two police cars are driving down the highway at 80 km/h. The first car turns on its siren, which has a frequency of 650 Hz. What frequency will the police officer in the second car hear?
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
6. For what purpose do bats use ultrasonic waves?
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
7. A sound wave travels through air at a speed of 350 m/s. Which of the following most likely describes the speed of that sound wave through water?
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