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Flashcards

Physics

Angela De Leon Physics Year 8 English 38 cards

Cards in this deck (38)

  1. 1Light carries energy as a what?AS A WAVE.
  2. 21.Light waves are "what" waves? 2.Sound waves are "what" waves?1. Transverse waves
    2. Longitudinal waves
  3. 3An object that gives our lights is described as what?LUMINOUS
  4. 4An object that doesn't give put lights is what?non-luminous
  5. 5Which one travels faster? Sound or light?Light.
  6. 6What are formed when light is blocked?Shadows
  7. 7Objects that reflect light well have?1. Smooth, shiny surfaces.
    2. Usually pale colours
    3. Give clear images.
  8. 8Objects that DON'T reflect light well have?1. Have a rough, matt surfaces.
    2. Usually dark colours.
    3. Doesn't give any images.
  9. 91. In a mirror, what does left appear as and what does right appear as? 2. What is this called?1. Left appears as right and right appears as left.
    2.This is called LATERAL INVERSION.
  10. 10Does angle of incidence equal angle of reflection?Yes.
  11. 11True or false? Light gets reflected from a surface the same angle it hits it.True.
  12. 12Sound that are reflected is called a what?Echo.
  13. 13What is refraction?It's when waves speed up or slow down due to travelling in a different medium.
  14. 14What is a medium?It's something that light waves will travel through.
  15. 15Long sightedness is caused by?The lens being too thin or the eyeball being too short.
  16. 16Short sightedness is caused by?The lens being too thick or the eyeball being too long.
  17. 17What are the primary colours of light?Red, blue and green
  18. 18What is sound?Sound is a type of energy made when something VIBRATES.
  19. 19The ........... the amplitude of the wave on the trace, the louder the sound.Larger
  20. 20The .................... the number of waves across the oscilloscope trace, the higher the frequency and pitch.Greater.
  21. 21What is frequency?The number of complete vibrations (sound waves) per second.
  22. 22What is hertz?Frequency is measured in this unit.
  23. 23What is pitch?This is related to frequency and is described by how high or low the note is.
  24. 24What is amplitude?1.The amount of energy a sound wave.
    2. This shown by the height of the wave and if it is bigger it has more energy.
  25. 25What is pitch?This is related to frequency and is described by how high or low the note is.
  26. 26What is wavelength?The distance between each complete sound wave.
  27. 27True or false? The particles in a liquid are closer together than in a gas and a solid.False.
    The particles in a solid are closer together than in a liquid and a gas.
  28. 28Particles need to ....... vibrations through material to the ear.carry
  29. 29What does the outer ear do?The outer ear funnels in the sound.
  30. 30What does the ear canal do?The sound goes in the ear through the ear canal.
  31. 31What does the eardrum do?The vibrations from the sound causes your eardrum to vibrate.
  32. 32What do the ossicles do?The ossicles AMPLIFY the vibration given from the eardrum.
  33. 33What does cochlea do?The cochlea turns these into electrical signals.
  34. 34What does the auditory nerves do?They take the signals from the cochlea to the brain.
  35. 35The range of frequencies a person can hear is called?hearing range.
  36. 36Sound about 20,000K hertz is called what?ULTRASOUND.
  37. 37What is the formula to find out speed, time and distance?Speed= Distance divided by time.
    Distance= Speed x time.
    Time=Distance divided by speed.
  38. 38YEET

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Description
Year 8 Physics Flashcards on Physics, created by Angela De Leon on 17/06/2019.
Created by
Angela De Leon
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History
  • Created by Andrei De Leon · Oct 11, 2018
  • Copied by Andrei De Leon · Jan 3, 2019
  • Copied by Angela De Leon · Jun 8, 2019
  • Copied by Angela De Leon · Jun 17, 2019
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