Essential Physics Practice Exam

72 Questions | Total Attempts: 32

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Essential Physics Practice Exam

Take this quiz to help you prepare for your final. You will want a calculator and your equation list from your review handy. I will not see the results of your quiz unless you print out or email me the completion certificate. Do this if you want some bonus points! (email: rachael. [email protected] Org)


Questions and Answers
  • 1. 
     All Energy adheres to the Law of Conervation of Energy. Why is a light bulb not 100% efficient?
    • A. 

      New light bulbs are 100% efficient

    • B. 

      All energy transfers lose energy in the form of heat

    • C. 

      Tungsten wire in light bulbs are weak

    • D. 

      Of all energy transfers, light bulbs are least efficient

  • 2. 
    What is the potential energy of a 80 kg tourist at the top of a building that is 400 m high?
    • A. 

      9.8 J

    • B. 

      320000 J

    • C. 

      32000 J

    • D. 

      313600 J

  • 3. 
    Energy produced by the sun is
    • A. 

      Nuclear

    • B. 

      Chemical

    • C. 

      Electrical

    • D. 

      Mechanical

  • 4. 
    If the velocity of an object is 1m/s, then increases to 2 m/s, what will happen to the kinetic energy of the object?
    • A. 

      It is reduced by 2

    • B. 

      It stays the same

    • C. 

      It will double

    • D. 

      It will be multiplied by 4

  • 5. 
    Energy is measured in
    • A. 

      Newtons

    • B. 

      Amps

    • C. 

      Joules

    • D. 

      Kilograms

  • 6. 
    Ultraviolet light is an example of
    • A. 

      Heat energy

    • B. 

      Electromagnetic energy

    • C. 

      Potential energy

    • D. 

      Electrical energy

  • 7. 
    A magic turtle has a mass of 47kg and can run 31 m/s. What is his kinetic energy?
    • A. 

      22583.5 J

    • B. 

      68479 J

    • C. 

      1739 J

    • D. 

      34239.5 J

  • 8. 
    Pedaling a bike is an example of
    • A. 

      Potential energy

    • B. 

      Thermal energy

    • C. 

      Mechanical energy

    • D. 

      Heat energy

  • 9. 
     When you drag your book across a table, friction will convert
    • A. 

      Kinetic energy to potential energy

    • B. 

      Kinetic energy to thermal energy

    • C. 

      Potential energy to wavelengths

    • D. 

      Potential energy to kinetic energy

  • 10. 
    In the energy transfer diagram of a battery and a light bulb,
    • A. 

      Heat energy is transferred to chemical energy

    • B. 

      Chemical energy is transferred to mechanical energy

    • C. 

      Electrical energy is transferred to mechanical energy

    • D. 

      Electrical energy is transferred to light (electromagnetic) energy

  • 11. 
    Point A represents matter at a solid. What phase change is happening at point B?
    • A. 

      Freezing

    • B. 

      Melting

    • C. 

      Sublimation

    • D. 

      Vaporization

  • 12. 
    Point C represents the melting point of a substance. What would Point E represent?
    • A. 

      Freezing

    • B. 

      Melting

    • C. 

      Sublimation

    • D. 

      Vaporization

  • 13. 
    Which one of the following is a conductor?
    • A. 

      Straw

    • B. 

      Metal

    • C. 

      Wool

    • D. 

      Wool

  • 14. 
    A charged balloon can pick up small bits of paper, proving that its ____ force is stronger than Earth's gravitational force.
    • A. 

      Voltage

    • B. 

      Magnetic field

    • C. 

      Electrical force

    • D. 

      Current

  • 15. 
    The phase of matter with a definite chape and volume is
    • A. 

      Plasma

    • B. 

      Liquid

    • C. 

      Gas

    • D. 

      Solid

  • 16. 
    The phase with the most energetic molecules is
    • A. 

      Solid

    • B. 

      Liquid

    • C. 

      Gas

    • D. 

      Absolute zero

  • 17. 
    When submimation occurs,
    • A. 

      Solid is converted to gas

    • B. 

      Solid is converted to liquid

    • C. 

      Gas is converted to liquid

    • D. 

      Water melts

  • 18. 
    Ohms () is the unit of measurement for
    • A. 

      Current

    • B. 

      Resistance

    • C. 

      Voltage

    • D. 

      Temperature

  • 19. 
    Like charges
    • A. 

      Attract

    • B. 

      Repel

    • C. 

      Balance one another

  • 20. 
    Which temperature scale does water have a boiling point of 100 and a freezing point of 0
    • A. 

      Fahrenheit

    • B. 

      Celsius

    • C. 

      Kelvin

    • D. 

      Rankine

  • 21. 
    Tension breaker: Pizza is
    • A. 

      Delicious

    • B. 

      Just ok

    • C. 

      Gross

    • D. 

      For sissies

  • 22. 
    The way in which energy travels the length of a metal is
    • A. 

      Radiation

    • B. 

      Convection

    • C. 

      Conduction

    • D. 

      Conviction

  • 23. 
    The temperature in which particles would not be moving
    • A. 

      32 degrees F

    • B. 

      -273 Kelvin

    • C. 

      0 degrees Celsius

    • D. 

      Absolute Zero

  • 24. 
    When using the equation I=V/R, what happens to the current when resistance is doubled?
    • A. 

      The current decreases

    • B. 

      The current increases

    • C. 

      The current stays the same

    • D. 

      The current alternates

  • 25. 
    Current is measured using
    • A. 

      Coulombs

    • B. 

      Amps

    • C. 

      Ohms

    • D. 

      Volts

  • 26. 
    As bulbs are added to a ___ circuit, they shine less brightly
    • A. 

      Closed

    • B. 

      Open

    • C. 

      Parallel

    • D. 

      Series

  • 27. 
    The circuit shown below is
    • A. 

      An open circuit

    • B. 

      A series circuit

    • C. 

      A parallel circuit

    • D. 

      Both series and parallel circuits

  • 28. 
    What voltage produces a current of 300 amps with a resistance of 20 Ohms?
    • A. 

      6000 volts

    • B. 

      600 volts

    • C. 

      15 volts

    • D. 

      0.15 volts

  • 29. 
    A 9 volt battery produces a current of 45 amperes. What is the resistance?
    • A. 

      405 ohms

    • B. 

      5 ohms

    • C. 

      0.2 ohms

    • D. 

      There is no resistance

  • 30. 
    What is an example of a transverse wave?
    • A. 

      Hand wave

    • B. 

      Sound wave

    • C. 

      Ocean wave

    • D. 

      Electromagnetic wave

  • 31. 
    The distance a wave travels in a certain amount of time is the ___
    • A. 

      Wavelength

    • B. 

      Speed

    • C. 

      Frequency

    • D. 

      Amplitude

  • 32. 
    In this diagram, wavelength is labeled __
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 33. 
    In this diagram, amplitude is lableled __
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 34. 
    Sound waves with frequencies above the normal human range of hearing are
    • A. 

      Infrasound

    • B. 

      Untrasound

    • C. 

      Decibels

    • D. 

      Resonance

  • 35. 
    Bats use ____ to locate food and navigate
    • A. 

      Acoustics

    • B. 

      Resonance

    • C. 

      Echolocation

    • D. 

      Infrared

  • 36. 
    Wavelength is measured in
    • A. 

      Meters

    • B. 

      Hertz

    • C. 

      Decibels

    • D. 

      Meters per second

  • 37. 
    Frequency is measured in
    • A. 

      Meters

    • B. 

      Hertz

    • C. 

      Decibels

    • D. 

      Meters per second

  • 38. 
    A wave has a wavelength of  3 m and a frequency of 6Hz. What is the speed of the wave?
    • A. 

      2 m/s

    • B. 

      9 m/s

    • C. 

      18 m/s

    • D. 

      0.5 m/s

  • 39. 
    The speed of a wave is 20m/s and the frequency is 100Hz. What is the wavelength?
    • A. 

      0.2m

    • B. 

      5m

    • C. 

      2000m

    • D. 

      2m

  • 40. 
    Why do you hear thunder after you see lightning?
    • A. 

      Light and sound travel at the same speeds

    • B. 

      Sound is faster than light

    • C. 

      Light is faster than sound

    • D. 

      Sound is faster in certain temperatures

  • 41. 
    ____ waves can transfer energy without a medium
    • A. 

      Sound

    • B. 

      Electromagnetic

    • C. 

      Longitudinal

    • D. 

      Surface

  • 42. 
    Its harder to hear at the back of the auditorium because
    • A. 

      The intensity of the wave decreases as distance from the source increases

    • B. 

      The frequency of the wave decreases as distance from the source increases

    • C. 

      The intensity of the wave increases as distance from the source increases

    • D. 

      The frequency of the wave increases as distance from the source increases

  • 43. 
    The loudness of a sound depends upon the wave's
    • A. 

      Frequency

    • B. 

      Amplitude

    • C. 

      Pitch

    • D. 

      Speed

  • 44. 
    Sound is a ___ wave
    • A. 

      Surface

    • B. 

      Transverse

    • C. 

      Longitudinal

    • D. 

      Electromagnetic

  • 45. 
    All electro magnetic waves have the same ___
    • A. 

      Speed

    • B. 

      Wavelength

    • C. 

      Frequency

    • D. 

      Amplitude

  • 46. 
    ____ waves would cause a sunburn
    • A. 

      Gamma

    • B. 

      Radio

    • C. 

      UV

    • D. 

      X-ray

  • 47. 
    ____ waves have the shortest wavelengths
    • A. 

      Gamma

    • B. 

      Radio

    • C. 

      UV

    • D. 

      X-ray

  • 48. 
    A police using a radar gun is using ___ waves
    • A. 

      Gamma

    • B. 

      Radio

    • C. 

      UV

    • D. 

      X-ray

  • 49. 
    Electromagnetic waves with the longest wavelengths have
    • A. 

      The highest energy

    • B. 

      The lowest frequency

    • C. 

      The most damaging effects

    • D. 

      The highest frequency

  • 50. 
    When light hits and bounces off a bumpy, uneven surface diffuse ____ occurs
    • A. 

      Refraction

    • B. 

      Absorption

    • C. 

      Refection

    • D. 

      Disbursement

  • 51. 
    When light passes from air to water,
    • A. 

      It speeds up

    • B. 

      It slows down

    • C. 

      It continues at the same speed

    • D. 

      It stops completely

  • 52. 
    When white light strikes a black object,
    • A. 

      No light is reflected

    • B. 

      All light is reflected

    • C. 

      Some light is reflected

    • D. 

      Light passes through the object

  • 53. 
    Opaque objects reflect some wavelengths of light a ___ the rest
    • A. 

      Refract

    • B. 

      Absorb

    • C. 

      Diffuse

  • 54. 
    • A. 

      A real image because its inverted

    • B. 

      A real image because its upright

    • C. 

      A virtual image because its inverted

    • D. 

      A virtual image because its upright

  • 55. 
    Clear glass is ____ while frosted glass is ___
    • A. 

      Opaque, transparent

    • B. 

      Translucent, opaque

    • C. 

      Translucent, transparent

    • D. 

      Transparent, translucent

  • 56. 
    The sunset appears red beceause
    • A. 

      All UV light is absorbed except red

    • B. 

      The other colors of light have longer wavelengths and get scattered first

    • C. 

      The other colors of light have shorter wavelengths and get scattered first

    • D. 

      All UV light is red

  • 57. 
    As two objects move apart, what happens to the force of gravity between them?
    • A. 

      It increases

    • B. 

      It decreases

    • C. 

      It stays the same

  • 58. 
     Your weight is different than your mass because
    • A. 

      Mass is the force of gravity acting on your weight

    • B. 

      Weight is the force of gravity acting on your mass

    • C. 

      Weight takes kinetic energy into account

    • D. 

      Weight and mass are always the same

  • 59. 
    A car moving at constant velocity has what forces acting upon it? (Check all that apply)
    • A. 

      Friction

    • B. 

      Air resistance

    • C. 

      Gravity

  • 60. 
    The push or pull on an object causing it to accelerate is
    • A. 

      Speed

    • B. 

      Density

    • C. 

      Force

    • D. 

      Mass

  • 61. 
    The tendency of matter to resist a change in motion is ___
    • A. 

      Gravity

    • B. 

      Inertia

    • C. 

      Friction

    • D. 

      Resistance

  • 62. 
    An 10000 N hippo is free falling and deploys a parachute that provides 6000 N of air resistance. What is the net force acting on the hippo?
    • A. 

      4000 N down

    • B. 

      4000 N up

    • C. 

      16000 N down

    • D. 

      16000 N up

  • 63. 
    Your computer exerts a downward force on the desk and the desk exerts an
    • A. 

      Unequal force in the opposite direction

    • B. 

      Unequal force in the same direction

    • C. 

      Equal force in the same direction

    • D. 

      Equal force in the opposite direction

  • 64. 
    The average speed of a car that travels 150 km in 3 hours is
    • A. 

      10 km/h

    • B. 

      25 km/h

    • C. 

      50 km/h

    • D. 

      100 km/h

  • 65. 
    How much net force is needed to accelerate a 5000kg truck at 4 m/?
    • A. 

      2000N

    • B. 

      4000N

    • C. 

      20000N

    • D. 

      1250N

  • 66. 
    A race horse goes from 5 m/s to 15 m/s in 2 seconds. What was its acceleration?  ( NOTE: All answers are in m/....It takes forever to get this program to do superscripts!!)
    • A. 

      5

    • B. 

      10

    • C. 

      15

    • D. 

      2

  • 67. 
    What is the speed of the car plotted on this graph?
    • A. 

      5 m/s

    • B. 

      10 m/s

    • C. 

      20 m/s

    • D. 

      50 m/s

  • 68. 
    Between A and B the car
    • A. 

      Slowed down

    • B. 

      Sped up

    • C. 

      Had no acceleration

    • D. 

      Stopped

  • 69. 
    Between which interval was the greatest negative acceleration?
    • A. 

      AB

    • B. 

      BC

    • C. 

      CD

    • D. 

      DE

  • 70. 
    How many meters did the car travel between A and B?
    • A. 

      0m

    • B. 

      10m

    • C. 

      50m

    • D. 

      100m

  • 71. 
    • A. 

      Constant acceleration and constant speed

    • B. 

      Changing acceleration and constant speed

    • C. 

      Changing acceleration and changing speed

    • D. 

      Constant acceleration and changing speed

  • 72. 
    • A. 

      Rotation

    • B. 

      Revolution

    • C. 

      Circular motion