Light, Sound And Electricity - Diagnostic Test

23 Questions | Total Attempts: 188

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Electricity Quizzes & Trivia

Questions and Answers
  • 1. 
    In a sound wave diagram, what would be the value to look at to tell the difference between a low pitch and a high pitch?
    • A. 

      The amplitude of the wave

    • B. 

      The frequency of the wave

    • C. 

      The wavelength of the wave

    • D. 

      The height of the wave

  • 2. 
    Kyle sees a flash of light and 3.5 seconds later the sound of the thunder reaches his ears. How far away from Kyle did the lightening strike the ground?
    • A. 

      1.16 km

    • B. 

      1250 m

    • C. 

      94 m

    • D. 

      1.25 km

  • 3. 
    A beam of light is situated 25cm away from a glass jar filled with water. The light beam bends away from the normal twice. Complete the following sentence.This property is known as _______, and the light bends once when it passes through the _______ and again when it passes through the _______.
    • A. 

      Reflection, glass, water

    • B. 

      Refraction, air, water

    • C. 

      Reflection, air, glass

    • D. 

      Refraction, glass, water

  • 4. 
    Red light is reflected off of a convex mirror. The resulting, reflected light rays ...
    • A. 

      Converge

    • B. 

      Diverge

    • C. 

      Focalise

    • D. 

      None of the answers provided are correct

  • 5. 
    *A light beam is directed through a concave lens, then a convex lens. The resulting light beams will be...    (draw a picture to see if it will help)
    • A. 

      Converging

    • B. 

      Diverging

    • C. 

      Parallel

    • D. 

      None of the answers are correct

  • 6. 
    As the width of a convex lens increases, the length to the point of focus ...
    • A. 

      Decreases

    • B. 

      Increases

    • C. 

      Stays the same

    • D. 

      None of the options are correct

  • 7. 
    Three marbles, Red, Blue, and Yellow, are placed inside a black box. A blue light then a white light then a purple light is turned on inside the box. In what order are the marbles seen?
    • A. 

      Blue, all of them, blue and red

    • B. 

      Blue, none of them, all of them

    • C. 

      Blue, all of them, none of them

    • D. 

      None of them, all of them, blue and red

    • E. 

      Blue, none of them, none of them

    • F. 

      Blue, none of them, blue and red

  • 8. 
    If a series circuit is set up for a set of Christmas tree lights and one of the bulbs blow what happens and why?
    • A. 

      One bulb will stop working, because that bulb will have lost its connection to the flow of electrons

    • B. 

      Some bulbs will stop working, because some of the bulbs will have lost their connection to the flow of electrons

    • C. 

      One bulb will stop working, because the circuit is interrupted to only the one broken bulb

    • D. 

      All bulbs will stop working, because the circuit to all globes is interrupted

  • 9. 
    Why can sound travel through a vacuum?
    • A. 

      It can't, because sound is caused by vibration and it needs a medium to pass through

    • B. 

      Because sound is caused by vibration and a vacuum contains a medium to pass through

    • C. 

      It can't, because sound is a mechanical wave which creates pressure and displacement and air inside a vacuum is stationary

    • D. 

      Because sound is a mechanical wave which creates pressure and displacement of the stationary air inside a vacuum

  • 10. 
    The human eye being able to see colours is a result of
    • A. 

      The four colour cones in the eye sending light sensitive impulses to the brain

    • B. 

      Coloured light being absorbed by an object

    • C. 

      Coloured light being reflected by an object

    • D. 

      The four colour cones in the eye sending colour sensitive impulses to the brain

  • 11. 
    Seeing a rainbow is the result of...
    • A. 

      White light refracting through a water droplet

    • B. 

      Different coloured lights refracting through a water droplet

    • C. 

      White light reflecting off a water droplet

    • D. 

      Different coloured lights reflecting off a water droplet

  • 12. 
    Light bending away from the normal is typically used in an explanation of what happens to a light ray in ...
    • A. 

      Reflection

    • B. 

      Refraction

    • C. 

      Convergence

    • D. 

      Divergence

  • 13. 
    What happens to the light rays passing through a concave lens with the width of the lens is increased?
    • A. 

      They move further apart

    • B. 

      They move closer together

    • C. 

      The focal length increases

    • D. 

      The focal length decreases

  • 14. 
    The intensity of sound is measure in decibels (dB). The intensity of the sound of a guitar is 80 dB. If the same guitar is played at the same time (two guitars are played) what would happen to the decibel reading?
    • A. 

      Stay the same

    • B. 

      Decrease

    • C. 

      Increase

    • D. 

      There is no way to tell how the decibels would change

  • 15. 
    Which of the following is correct about current and voltage?
    • A. 

      As voltage decreases current increases

    • B. 

      Voltage is electrical force and current is the rate of electron flow

    • C. 

      Voltage is dependant upon currrent

    • D. 

      Voltage creates electrical current, and current is a measure of electrical current force

  • 16. 
    Which of the following is correct about resistance?
    • A. 

      As resistance increases, the current decreases and voltage remains the same

    • B. 

      As resistance increases, the current increases and the voltage remains the same

    • C. 

      Resistance is a measure of the amount of current that does not flow through a circuit

    • D. 

      Resistance is a measure of a substances ability to improve the current flow through a circuit

  • 17. 
    Light passes through a lens in the human eye and is projected onto the retina of the eye where the image in processes. What is true about this process?
    • A. 

      The lens is convex, and the image is projected onto the retina smaller and upside down

    • B. 

      The lens is concave, and the image is projected onto the retina larger and right way up

    • C. 

      The lens is convex, and the image is projected onto the retina larger and upside down

    • D. 

      The lens is concave, and the image is projected on to the retina smaller and upside down

  • 18. 
    Kasey is wearing blue tinted glasses. What are the main colours of visible light that her glasses absorb or block?
    • A. 

      Blue and red

    • B. 

      Blue, green and yellow

    • C. 

      Red and purple

    • D. 

      Purple and green

    • E. 

      Non of the options are correct

  • 19. 
    Kasey is wearing blue tinted glasses. What colour will her eyes predominantly see and why?
    • A. 

      Kasey will see red because the lens absorbs blue light and reflects reds and purples

    • B. 

      Kasey will see blue because the lens absorbes reds and purples and lets blue light pass through it

    • C. 

      Kasey will see blue because the lens absorbs blue light making everything appear blue

    • D. 

      Kasey will see red because the lens absorbs red light making everything appear red

  • 20. 
    A cat can hear sounds up to 70,000 Hz. Bats send and receive ultra-high squeaks of up to 120,000 Hz. Which animal hears sound of shorter wavelengths, cats or bats?
    • A. 

      Cats, because lower Hz means shorter wavelenths

    • B. 

      Bats, because higher Hz means longer wavelengths

    • C. 

      Cats, because lower frequency means shorter wavelength

    • D. 

      Bats, because higher frequency means shorter wavelength

  • 21. 
    The loudness and pitch of a sound being transmitted increases. Which of the following is true?
    • A. 

      The amplitude increases and the wavelength increases

    • B. 

      The amplitude decreases and the wavelength decreases

    • C. 

      The amplitude decreases and the wavelength increases

    • D. 

      The amplitude increases and the wavelength decreases

  • 22. 
    ** Explain what you must do to lower the pitch of a note played on a single guitar string by altering the length of the string
    • A. 

      The string needs to be made longer

    • B. 

      The string needs to be made shorter

    • C. 

      The strings length does not need to be changed

    • D. 

      Changing the length of the string will not change the pitch

  • 23. 
    Why do tuning forks with long prongs vibrate at a lower frequency (lower tones) than short-tuned forks? Hint: longer tuning forks are slightly heavier.
    • A. 

      More weight means less vibrations which means smaller wavelength

    • B. 

      More weight means more vibration which means smaller wavelengths

    • C. 

      More weight means less vibration which means larger wavelengths

    • D. 

      More weight means more vibration which means larger wavelengths

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