Physics Final Exam

1. Work is defined as…

A) Any force acting on an object

B) A force causing movement in the same direction (Correct)

C) The speed of an object over time

D) Energy stored in an object

2. Energy is best defined as…

A) The ability to do work (Correct)

B) A force that causes motion

C) The speed of moving objects

D) Heat transferred between objects

3. Kinetic energy is energy an object has because of its…

A) Height

B) Mass only

C) Motion (Correct)

D) Temperature

4. Potential energy is energy stored because of an object’s…

A) Speed

B) Position or height (Correct)

C) Acceleration

D) Direction

5. Power is…

A) The total force on an object

B) Energy stored in motion

C) The rate at which work is done (Correct)

D) The amount of momentum an object has

6. As a ball falls toward the ground, what happens?

A) KE increases and PE decreases (Correct)

B) KE decreases and PE increases

C) Both increase

D) Both stay the same

7. Which situation has the MOST kinetic energy?

A) A parked car

B) A stretched rubber band

C) A moving train (Correct)

D) A book on a shelf

8. Which object has gravitational potential energy?

A) A rolling soccer ball

B) A flying airplane (Correct)

C) A parked bike on the ground

D) A spinning fan blade

9. The Law of Conservation of Energy states that…

A) Energy can be destroyed

B) Energy can be created from nothing

C) Energy changes form but total energy stays constant (Correct)

D) Kinetic energy always equals potential energy

10. A pendulum has the MOST kinetic energy at…

A) The highest point

B) The lowest point (Correct)

C) Every point equally

D) When it stops moving

11. Momentum depends on an object’s…

A) Height and force

B) Mass and velocity (Correct)

C) Power and energy

D) Acceleration only

12. Impulse is equal to…

A) Force × Time (Correct)

B) Mass × Velocity

C) Work ÷ Time

D) Force × Distance

13. Why do airbags reduce injury?

A) They increase force

B) They decrease momentum

C) They increase stopping time (Correct)

D) They make collisions elastic

14. If the time of a collision increases, the force will…

A) Increase

B) Stay the same

C) Decrease (Correct)

D) Double automatically

15. In a closed system, momentum is…

A) Always destroyed

B) Conserved (Correct)

C) Equal to kinetic energy

D) Only conserved in elastic collisions

16. Two football players collide and stick together. This is…

A) Elastic

B) Inelastic (Correct)

C) Circular motion

D) Free fall

17. Which object has the greatest momentum?

A) A slow-moving truck (Correct)

B) A fast baseball

C) A parked car

D) An object with no mass

18. Static electricity is…

A) Moving current through a wire

B) An imbalance of electric charges (Correct)

C) Heat from electricity

D) A magnetic field

19. A conductor is a material that…

A) Blocks electrons

B) Allows electrons to move easily (Correct)

C) Has no electric charge

D) Stops current completely

20. Which is an insulator?

A) Copper

B) Aluminum

C) Rubber (Correct)

D) Silver

21. Charging by friction happens when…

A) Two materials rub together (Correct)

B) Objects touch briefly

C) Charges move through a wire

D) A battery is connected

22. Charging without touching is called…

A) Friction

B) Conduction

C) Induction (Correct)

D) Resistance

23. Electric current is…

A) Stored energy

B) The flow of electric charge (Correct)

C) Resistance in a wire

D) Energy lost in a circuit

24. Voltage is best described as…

A) Electrical pressure that pushes charges (Correct)

B) Resistance to current

C) Amount of charge in a wire

D) Total energy destroyed in a circuit

25. Ohm's Law is ...

A) Force equals mass times acceleration

B) Voltage equals current times resistance (Correct)

C) Power equals work divided by time

D) Momentum equals mass times velocity

26. In a SERIES circuit…

A) Current splits between branches

B) Voltage is the same everywhere

C) Current stays the same throughout (Correct)

D) Resistance decreases with more resistors

27. In a PARALLEL circuit…

A) Current stays identical in every branch

B) Voltage is the same across each branch (Correct)

C) Resistance always increases

D) Only one path exists for current

28. Adding more resistors in parallel causes total resistance to…

A) Increase

B) Stay constant

C) Decrease (Correct)

D) Become zero

29. Which quantity is a vector?

A) Speed

B) Distance

C) Momentum (Correct)

D) Energy

30. Which law explains why rockets move forward?

A) Newton’s 1st Law

B) Newton’s 2nd Law

C) Newton’s 3rd Law (Correct)

D) Law of Conservation of Energy

31. If net force on an object is zero, the object…

A) Must stop moving

B) Must speed up

C) Keeps its current motion (Correct)

D) Must move in circles

32. Which graph feature represents velocity on a position-time graph?

A) Area under the graph

B) Slope of the graph (Correct)

C) Highest point

D) Width of the graph

32. Which graph feature represents velocity on a position-time graph?

A) Area under the graph

B) Slope of the graph

C) Highest point (Correct)

D) Width of the graph

34. Which quantity is measured in Joules?

A) Power

B) Current

C) Energy (Correct)

D) Voltage

35. Why does a red apple appear red?

A) It absorbs red light and reflects all other colors

B) It reflects red light and absorbs most other colors (Correct)

C) It creates red light naturally

D) It bends red light toward your eyes

36. What color of light contains all visible colors mixed together?

A) Black

B) Blue

C) Green

D) White (Correct)

37. What happens when all colors of pigment are mixed together?

A) They become white

B) They become transparent

C) They become black or very dark (Correct)

D) They glow brighter

38. Which color has the LONGEST wavelength in the visible spectrum?

A) Red (Correct)

B) Violet

C) Blue

D) Green

39. Which color has the HIGHEST frequency?

A) Orange

B) Yellow

C) Red

D) Violet (Correct)

40. If you shine red light on a blue shirt, the shirt will most likely appear…

A) Blue

B) White

C) Black or very dark (Correct)

D) Purple

41. Which type of mirror always produces an upright, smaller image?

A) Concave mirror

B) Plane mirror

C) Convex mirror (Correct)

D) Flat lens

42. Why does a straw look bent in water?

A) Reflection

B) Diffraction

C) Refraction (Correct)

D) Polarization

43. Black objects become hotter in sunlight because they…

A) Reflect all light

B) Absorb most light energy (Correct)

C) Produce their own heat

D) Bend sunlight inward

44. A prism separates white light because different colors…

A) Have different speeds and bend differently (Correct)

B) Have the same wavelength

C) Reflect equally

D) Cancel each other out

45. Which situation has NO acceleration?

A) A car speeding up

B) A car slowing down

C) A car turning

D) A car moving at constant velocity in a straight line (Correct)

46. Which object has the MOST gravitational potential energy?

A) A bowling ball on the floor

B) A feather on a rooftop

C) A heavy rock on a cliff (Correct)

D) A rolling marble

47. Newton’s 2nd Law explains that acceleration depends on…

A) Mass and force (Correct)

B) Energy and power

C) Velocity and distance

D) Height and time

48. Which statement about electric current is true?

A) Current is used up in a circuit

B) Current is the flow of electric charge (Correct)

C) Current is stored inside resistors

D) Current only exists near batteries

49. In a parallel circuit, adding another branch usually makes the total current…

A) Decrease

B) Stay the same

C) Increase (Correct)

D) Become zero

50. Why is it easier to push an empty shopping cart than a full one?

A) The full cart has more momentum

B) The full cart has more inertia (Correct)

C) The empty cart has more gravity

D) The empty cart has less energy

51. What are the primary colors of LIGHT?

A) Red, Blue, Yellow

B) Cyan, Magenta, Yellow

C) Red, Green, Blue (Correct)

D) Orange, Purple, Green

52. What are the secondary colors of LIGHT?

A) Cyan, Magenta, Yellow (Correct)

B) Red, Blue, Green

C) Orange, Black, White

D) Violet, Indigo, Red

53. Red light + Green light produces…

A) Blue

B) Yellow (Correct)

C) Cyan

D) Magenta

54. Blue light + Green light produces…

A) Cyan (Correct)

B) Yellow

C) White

D) Red

55. Red light + Blue light produces…

A) Green

B) Cyan

C) Magenta (Correct)

D) Yellow

56. Cyan light minus green light leaves…

A) Red

B) Blue (Correct)

C) Yellow

D) White

57. White light minus yellow light leaves…

A) Red

B) Green

C) Blue (Correct)

D) Cyan

58. Cyan + Magenta + Yellow together produce…

A) White

B) Black (Correct)

C) Blue

D) Red

59. Cyan + Magenta minus blue leaves…

A) Red (Correct)

B) Green

C) Yellow

D) White

60. If you stare at a magenta shirt and then look at a white wall, you will most likely see…

A) Green (Correct)

B) Red

C) Blue

D) Black

61. A magenta shirt reflects…

A) Only green light

B) Red and blue light (Correct)

C) Yellow light only

D) All visible light equally

62. As you move across the electromagnetic spectrum toward shorter wavelengths…

A) Frequency and energy decrease

B) Frequency decreases while energy increases

C) Frequency and energy increase (Correct)

D) Wavelength and energy both increase

63. Which electromagnetic wave has the LOWEST frequency?

A) Gamma rays

B) X-rays

C) Radio waves (Correct)

D) Ultraviolet waves

64. Which electromagnetic wave has the HIGHEST energy?

A) Microwaves

B) Infrared waves

C) Visible light

D) Gamma rays (Correct)

65. Which visible color has the HIGHEST energy?

A) Red

B) Orange

C) Violet (Correct)

D) Yellow

66. Which visible color has the LOWEST energy?

A) Blue

B) Violet

C) Green

D) Red (Correct)