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48 Matching questions

  1. Primary Colors
  2. Cosmic, Gamma, Ultraviolet, and X rays
  3. 3 means of atoms becoming excited
  4. Electromagnetic Spectrum
  5. Refraction of Light
  6. Bright Line Spectra
  7. Photo Electric Theory
  8. Flashlights and spotlihts
  9. Transparent Objects
  10. Compound lens system
  11. Color of Objects
  12. Illuminated Objects
  13. Convex Mirrors
  14. Diffuse Reflection
  15. Dual Nature of Light
  16. Farsightedness (hyperopia)
  17. Mirage
  18. Nearsightedness (myopia)
  19. Opaque Objects
  20. Total Internal Refraction
  21. Velocity of Light
  22. Light, Infrared, and Radio Waves
  23. Light
  24. Production of Light
  25. Illumincance (Illumination)
  26. Human Eye
  27. Primary Pigments
  28. Concave Mirrors
  29. Law of Refractions
  30. Regular Reflection
  31. Luminous flux
  32. Scattering (blue sky)
  33. Light year
  34. Rainbow in the Sky
  35. Continuous Spectrum
  36. Illuminance Calulation
  37. Diverging (concave) lens
  38. Dispersion
  39. Virtual Image
  40. Converging (convex) lens
  41. Luminous Intensity
  42. Law of Reflection
  43. Translucent Objects
  44. Index of Refraction
  45. Real Image
  46. Sun not where it appears?
  47. Luminous Objects
  48. Reflection of Light
  1. a focal length is negative
  2. b the lens canot focus near, almost all people become this as they age and need reading glasses, converted with a converging lens
  3. c contains a flexible converging lens surrounded by muscles, the muscles contract to focus near and relax to focus far, a real image is focused on the black of the eye (retina)
  4. d all atoms have electrons in distinct energy levels. When atoms absorb energy, electrons move to higher energy levels. In all substances, the electrons return to lower energy levels and give off energy in form of light
  5. e change in density above road is caused by heat, causes the light to bend and never reach the road
  6. f allow light to pass through without distortion, example: clear glass or air
  7. g heat which occurs in a regular incandescent bulb, electricity through a gas which occurs in a fluorescent light bulb, and light shining on a substance that glows which occurs in the white phosphorous in the inside of the fluorescent tubes
  8. h distance that light travels in one year, used to measure extremely large distances like the distance to stars
  9. i distinct lines of color (wavelength) given off an element when viewed through a microscope
  10. j the lens can focus near but not far, most young people who need glasses are nearsighted, corrected with a diverging lens
  11. k yellow, cyan, magenta
  12. l thinner in the middle and thicker on the ends
  13. m light has the properties of both particles and waves
  14. n can be projected onto a screen and is always upside down if the object is right side up. Image distance is positive, magnification and height are negative
  15. o light left sun 8 minutes ago, the light is going to the atmosphere, different in n's and the light bends. The light bends from vacuum to air, the n changes
  16. p allow light to pass through but the light is distorted, example: frosted glass
  17. q give off their own light, example: sun, light bulb, candle flame
  18. r when mixed they produce white: blue, green, and red
  19. s thicker in the middle and thinner on the ends, example: magnifying glass
  20. t brightness of the source, more commonly used than luminous intensity, measured in lumens
  21. u light rays will bounce off a surface at the same angle they struck
  22. v curved inward
  23. w the amount of light that falls on a surface, depends upon the brightness of the source and how far the surface is from the source
  24. x high frequency and harmful
  25. y cannot be projected and is only seen on the mirror or lens, they are always right side up. Image distance is negative, magnification and height are positive
  26. z reflect light, everything we see that isn't luminous
  27. aa when light strikes a thin foil, electrons are emmitted off the backside of the foil as if a collision took place, this effect could not be explained by the wave theory and was a conclusive support for the particle theory
  28. ab as light pases from less dense medium into more dense medium, it will blend towards to the normal. If the light ray passes from more dense to less dense, it bends away from the normal
  29. ac reflection off a smooth surface like mirrors, images are seen
  30. ad do not allow light to pass through, example: solid wall
  31. ae all the colors of white light when viewed through a spectroscope, ROYGBIV
  32. af brightness of the source, measured in candles or candle power
  33. ag breaking of white light into its colors when it passes through a prism, it produces a continuous spectrum (ROYGBIV)
  34. ah they contain a concave or spherical mirror or parabolic mirror, the light source is placed at the focal point and the light shines back on the mirror and reflects as a beam
  35. ai all travel at 3x10^8 m/s
  36. aj complete range of radiation produced by accelerated charged particles
  37. ak angle of incidence = angle of reflection
  38. al reflection off a rough surface, no image is seen
  39. am the color we see due to the wavelengths reflected. Blue objects reflect blue wavelengths and red objects reflect red wavelengths, etc. Black objects absorb light and white objects reflect all wavelengths
  40. an blue wavelengths reflect off air molecules and scatter in all directions
  41. ao numerical value for the optical density of the substance
  42. ap as light passes from one medium to another, it changes velocity. If the light enters the new medium at an angle, the light ray will bend. The degree to which it bends upon the optical densities of the media involved
  43. aq 1m/m^2
  44. ar produced when tiny water droplets in the sky act as prisms and disperse the light
  45. as (microscope or telescope) contains at least 2 lenses, the real image is produced by the first lens (objective lens) becomes the object for the second lens (the eyepiece) that magnifies it as a larger virtual image
  46. at low frequency and harmless
  47. au when a light passes from more dense medium toward less dense medium, if the angle is large enough, it wil not refract out of the substance but rather reflects inward
  48. av small portion of the electromagnetic spectrum that our eyes are capable of seeing