Practice Quiz

MCAS Physics Exam Practice - Question List

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31. When a student listens to music, sound waves propagate from the speaker to her ear. Which of the following is a physical description of this process?
  1. Particles produced at the speaker move to the student’s ear.
  2. Energy is transported from the speaker to the student’s ear.
  3. Material is transferred from the speaker to the student’s ear.
  4. Clusters of air molecules are sent from the speaker to the student’s ear.
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32. Which of the following statements best describes the force of Earth’s gravity on a rocket moving upward?
  1. The gravitational force is constant for all altitudes.
  2. The gravitational force is weaker when the rocket is higher.
  3. The gravitational force is stronger when the rocket is higher.
  4. The gravitational force is zero when the altitude is greater than 10,000 miles.
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33. A student swings a bat horizontally, making contact with a ball thrown to her. The ball leaves the bat, and the bat continues moving through the rest ofthe swing. Which of the following statements describes the change in energy ecessary to do work on the ball?
  1. All the kinetic energy of the bat is converted to work.
  2. All the potential energy of the bat is converted to work.
  3. Some of the kinetic energy of the bat is converted to work.
  4. Some of the potential energy of the bat is converted to work.
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34. A star suddenly explodes. Which of the following types of waves reach Earth’s surface?
  1. light only
  2. sound only
  3. sound followed by light
  4. light followed by sound
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35. A ball is thrown straight upward. The ball’s initial speed is 30 m/s and its mass is 0.05 kg, resulting in an initial kinetic energy of 22.5 J.If the initial potential energy of the ball is 10 J and there is no frictional force, what would be the ball’s total energy while it is moving?
  1. 0.0 J
  2. 10.0 J
  3. 22.5 J
  4. 32.5 J
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