PRAXIS II Test Study Guide | PRAXIS II Test Flashcards

Praxis II Physics: Content Knowledge Test Questions

1. Which of the following is a vector quantity?

1. temperature

2. speed

3. velocity

4. pressure

2. Which of the following explains the decrease in pressure in a tube through which a viscous fluid is moving?

1. Poiseuille’s equation

2. Pascal’s principle

3. Archimedes’ principle

4. Bernoulli’s principle

3. If a mass is suspended by a spring from the ceiling of an elevator, such that it has a constant period, how will the period of the mass change if the elevator begins moving up with a constant acceleration?

1. It will decrease.

2. It will increase.

3. It cannot be determined from the information given.

4. It will not change.

4. What determines the pitch of sound?

1. frequency

2. wavelength

3. amplitude

4. volume

5. Bob and Carl are riding on a merry-go-round. Bob is closer to the center of the merry-go-round. Who has the greater centripetal acceleration?

1. Bob

2. Carl

3. They have the same centripetal acceleration.

4. It cannot be determined from the information given.

6. A ball has a weight of 2 N and is rolled across a flat surface with an initial velocity of 15 m/s. What is the initial kinetic energy of the ball?

1. 13 J

2. 15 J

3. 20 J

4. 23 J

7. A bungee jumper jumps from a bridge. What is the best description of the change in energy after the jumper has reached the bottom of his descent and is pulled back up?

1. kinetic energy falls, potential energy rises

2. kinetic energy rises, potential energy falls

3. kinetic energy rises, potential energy remains constant

4. kinetic energy remains constant, potential energy increases

8. Dave lifts a 20 N block of iron 4 meters off of the ground at a constant speed. How much work has Dave done?

1. 5 J

2. 8 J

3. 24 J

4. 80 J

9. Which of the following represents the change in velocity divided by the change in time over the same period?

1. Average velocity

2. Displacement

3. Average acceleration

4. Top velocity

10. If a 4000-Ω resistor has 1mA of current flowing through it, then how much power does the resistor dissipate?

1. 1 mW

2. 2 mW

3. 3 mW

4. 4 mW

11. What are the SI units for shear modulus?

1. N ∙ m²

2. N/m²

3. N/m

4. N ∙ m

12. Two objects are dropped from the same height. The first object is dropped one second before the second object. Which of the following best describes the distance between the objects as they fall?

1. The distance will remain constant.

2. The distance will decrease.

3. The distance will increase.

4. The distance cannot be determined.

13. Which of the following is NOT a fundamental force?

1. Tension

2. Gravitational

3. Electroweak

4. Strong nuclear

14. If it takes 1.0 N of force to compress a spring 0.1 m, how much work is required to stretch the spring 0.4 m from its rest position?

1. 0.8 J

2. 1 J

3. 2 J

4. 4 J

15. How many significant figures are there in 10,078?

1. 1

2. 2

3. 3

4. 5

16. The disciplines of physics are:

1. Condensed matter and high energy

2. Gene Theories

3. Evolution

4. All of the above

17. Which of the following terms is not used in physics?

1. Motion

2. Patterns and functions

3. Space

4. Time

18. Scientific method is used to:

1. Report data

2. Correct data

3. Prove that data a predictable path

4. All of the above

19. The disciplines of physics are:

1. Functions

2. Reproduction

3. Anatomy and physiology

4. Astronomy and astrophysics

20. Which of the following terms is not used in physics?

1. Motion

2. Patterns and functions

3. Space

4. Time

Praxis II Physics: Content Knowledge Test Answer Key