Questions and answers by topic

Sun

    1. What is the name of the star at the centre of our solar system?
    2. How does the sun produce energy?
    3. What kind of energy does the sun emit?
    4. What are other names for solar radiation?
    5. What kind of solar radiation can we see?
    6. Does the sun emit electromagnetic radiation?
    7. What kind of energy does the sun emit?

Energy

    1. What is the name of the star at the centre of our solar system?
    2. How does the sun produce energy?
    3. What kind of energy does the sun emit?
    4. What are other names for solar radiation?
    5. What kind of solar radiation can we see?
    6. What kind of energy does the sun emit?
    7. Do radio waves or gamma rays transport more energy?

Sunshine, sunlight, solar radiation

  1. Why is sunshine important to human beings?
  2. What are other names for sunlight?
  3. Is sunlight made of waves or particles?
  4. How fast does sunlight travel through deep space?
  5. Why is too much ultra-violet radiation dangerous?
  6. What are other names for solar radiation?
  7. Does the sun emit electromagnetic radiation?
  8. What kind of solar radiation can we see?

Electromagnetic radiation

  1. Does the sun emit electromagnetic radiation?
  2. Is electromagnetic radiation visible as it travels through deep space?
  3. Is visible light a form of electromagnetic radiation?
  4. What units are used to measure the wavelength of electromagnetic radiation?
  5. Which type of electromagnetic radiation has the shortest wavelengths?
  6. Name the two forms of electromagnetic radiation just outside the visible spectrum?
  7. Which type of electromagnetic radiation has the highest frequency?

Electromagnetic spectrum

  1. Does the visible spectrum contain all the wavelengths of the electromagnetic spectrum?

Visible Spectrum

  1. What is the visible spectrum?
  2. Is visible light a form of electromagnetic radiation?
  3. Name six bands of colour in the visible spectrum starting with red?
  4. What is the band of colour with the longest range of wavelengths?
  5. What is the band of colour with the shortest range of wavelengths?
  6. What does nm the shorthand for?
  7. Does the visible spectrum contain all the wavelengths of the electromagnetic spectrum?
  8. What is the range of wavelengths (in nanometres) that makes up the visible spectrum?

Light

  1. Is visible light a form of electromagnetic radiation?
  2. What does nm the shorthand for?
  3. Is light visible as it travels through deep space?

Waves

    1. Is sunlight made of waves or particles?
    2. Can the wavelength of a wave be measured?
    3. Do shorter waves have a higher frequency?
    4. Do waves with lower frequency have a longer wavelength?
    5. What is the term for the lowest point in the oscillation of a wave?
    6. Is wavelength measured between the crests of successive waves?
    7. What speed does a light wave travel at in a vacuum?
    8. What is meant by the wavelength of a wave?

Electromagnetic waves

  1. Why do objects appear to be different colours to an observer?

Speed of light

  1. How fast does sunlight travel through deep space?

Ultraviolet light

  1. Why is too much ultra-violet radiation dangerous?

Objects

  1. Why do objects appear to be different colours to an observer?

Wavelength

  1. Do different wavelengths of light correspond with different colours?
  2. Name two colours with the longest wavelengths?
  3. Name two colours with the shortest wavelengths?
  4. Do different wavelengths of light correspond with different colours seen by an observer?
  5. What is the unit of measurement for wavelengths of visible light?
  6. What is the name of the invisible band of wavelengths next to red?
  7. Name two colours with the longest wavelengths?
  8. What units are used to measure the wavelength of electromagnetic radiation?
  9. Which type of electromagnetic radiation has the shortest wavelengths?
  10. Name two units used to measure the wavelength of electromagnetic waves?
  11. What unit is used to measure wavelength within the visible spectrum?
  12. Which has the longest wavelength, red or violet light waves?
  13. Which has the shortest wavelength, a radio wave or a gamma ray?
  14. Name two units used to measure the wavelength of electromagnetic waves?
  15. What is the largest unit used to measure wavelength?
  16. What unit is used to measure wavelength within the visible spectrum?
  17. Do gamma rays have a shorter wavelength than visible light?
  18. How many picometres in a metre?
  19. Shorter wavelength = higher frequency or lower frequency ?
  20. Lower frequency = longer wavelengths or shorter wavelengths?

Bands of Colour

  1. Name six bands of colour in the visible spectrum starting with red?
  2. What is the band of colour with the shortest range of wavelengths?
  3. Where are you most likely to see spectral colours on a rainy day?
  4. What is the name of the invisible band of wavelengths next to red?

Continuous Colour from Red to Violet

  1. Do different wavelengths of light correspond with different colours seen by an observer?
  2. Can you estimate how many different colours are there in the diagram. Are there hundreds or thousands?
  3. (New) Can you estimate how many different colours there are in the visible spectrum. Are there hundreds, thousands or millions?
  4. What is a continuous spectrum?

Long Waves to Short Waves

  1. Are electromagnetic waves the same as light waves?
  2. Can the wavelength of a wave be measured?
  3. Which has the longest wavelength, red or violet light waves?
  4. What is the range of wavelengths that correspond with what an observer might describe as green?

Electromagnetic Waves

  1. Is the wave shown in the diagram travelling from left to right?
  2. What does propagate mean?
  3. Are electromagnetic waves the same as light waves?
  4. What are the two fields that form an electromagnetic wave?
  5. What is the angle between the electric and magnetic fields of an electromagnetic wave?
  6. What speed does a light wave travel at in a vacuum?

Frequency

  1. Name four units of measurement for frequency?
  2. What is the smallest unit used to measure frequency?
  3. Which wave of visible light has a higher frequency, red or violet?
  4. Does energy increase with frequency?
  5. As frequency increases does wavelength decrease in length?
  6. Shorter wavelength = higher frequency or lower frequency ?
  7. Lower frequency = longer wavelengths or shorter wavelengths?
  8. What unit is used to measure the frequency of visible light?
  9. Which type of electromagnetic radiation has the highest frequency?
  10. Do shorter waves have a higher frequency?
  11. Do waves with lower frequency have a longer wavelength?
  12. What is the frequency of a wave?
  13. Can you name four units of measurement for frequency?
  14. What is the smallest unit used to measure frequency?
  15. Which colour of visible light has a higher frequency, red or violet?
  16. Does energy increase with frequency?
  17. As frequency increases does wavelength decrease in length?
  18. What is meant by the frequency of a wave?
  19. How is frequency calculated?
  20. Does the speed of light alter as it travels through different transparent media?

Radio waves

  1. What units are used to measure the wavelength of radio waves?
  2. Do radio waves or gamma rays transport more energy?

Medium, Media

  1. Does the speed at which light travels change as it propagates through different transparent media?
  2. Give an example of a medium through which light travels more quickly?
  3. Are crown glass and diamonds fast media?
  4. Does the colour of light change as it travels through different media?
  5. Does the wavelength of light change as it travels through different media?

White light

  1. What is white light?
  2. What natural source radiates light at all wavelengths of the electromagnetic spectrum?
  3. Does the sun produce light containing all wavelengths of the visible spectrum?
  4. What is the name for light containing all the wavelengths of the visible spectrum at equal intensity?
  5. Name the three RGB primary colours that can together produce white light?
  6. When white light strikes an object, what determines the colour an observer sees?
  7. What are the three wavelengths of light that when mixed together in equal proportions make white?

RGB colour model

  1. What does RBG stand for?
  2. Does a computer screen use the RGB or the CMYK colour model?
  3. (No pop-up)What are the six primary and secondary colours in the RGB colour model?
  4. Why are RGB colours usually arrange as a colourwheel?
  5. In which colour model is cyan a secondary colour?
  6. What are the two primary colours of light that together make cyan?

ROYGBV

  1. What does ROYGBV stand for?
  2. What is the visible spectrum?

Additive colour

  1. What are spectral colours?
  2. What wavelengths correspond with the extreme limits of the visible spectrum?
  3. Does each wavelength of visible light correspond with a unique spectral colour?
  4. Are rainbow colours spectral colours?
  5. Are colours produced by combining RGB primary colours spectral colours?
  6. What are additive primary colours?
  7. Name three addivite primary colours!

Spectral colour model

  1. What are spectral colours?
  2. Does each wavelength of visible light correspond with a unique spectral colour?
  3. What are non-spectral colours?
  4. What are secondary colours?
  5. Can ROYGBV all be produced by a single wavelength of light?
  6. Can RGB be produced by combining other wavelengths of light?
  7. Can the spectral colours orange, yellow and violet be produced by combining primary colours?
  8. Why are spectral colours usually arrange in a band with red at one end and violet at the other?

Primary colour

  1. What are spectral colours?
  2. What are RGB colours?
  3. What is a cone cell?
  4. Does the peak response of cone cells in the human eye correspond directly with RGB?
  5. Why do objects appear to be different colours to an observer?
  6. What are RGB primary colours?
  7. What are additive primary colours?
  8. What are the thee CMY primary colours?

Secondary colour

  1. What are secondary colours?
  2. What are the two primary colours of light that together make yellow?
  3. What are secondary colours?

Tertiary colour

      1. Name three colours of light that together make white?
      2. What are the three primary colours in the RGB colour model?
      3. How many tertiary colours are there in the RGB colour model?
      4. What is a RGB colourwheel?
      5. What is the difference between spectral colour and RGB colour?

Spectral colour model

  1. What is the difference between spectral colour and RGB colour?
  2. Why are spectral colours usually arrange in a band with red at one end and violet at the other?

RGB colour wheel

  1. What is an RGB colour wheel?
  2. What are the three primary colours when starting an RGB colourwheel?
  3. What are the three secondary colours when building an RGB colourwheel?
  4. Are equal proportions of primary colours used to produce secondary colours?
  5. Can all the colours in a colourwheel be produced by mixing pairs of primary colours in different proportions?
  6. Why are RGB colours often arranged in the form of a colourwheel?
  7. Do all RGB colour wheels start with primary colours?
  8. Do all RGB colour wheels include secondary colours?
  9. Do all RGB colour wheels include tertiary colours?
  10. Is every colour on a colour wheel produced by mixing equal proportions of the colours on either side?

Refraction

    1. What is a medium?
    2. What is meant by the normal?
    3. What happens when light undergoes refraction?
    4. What does Snells’ law deal with?
    5. What is refraction?
    6. What is refraction?
    7. How does the refractive index of a medium relate to the speed of light?
    8. How is the refractive index of a medium calculated?
    9. Why does the refractive index of a vaccuum = 1?
    10. How do the refractive indices of different media affect the direction in which light travels?

5750

      1. What is refraction?
      2. How does the refractive index of a medium relate to the speed of light?
      3. How is the refractive index of a medium calculated?
      4. Why does the refractive index of a vaccuum = 1?
      5. How do the refractive indices of different media affect the direction in which light travels?

5800

      1. What is the other term used for refractive index?
      2. What is the other term used for the law of refraction?
      3. What is the sine of an angle?
      4. What can be calculated if we know the refractive index of two adjacent media?
      5. How do the refractive indices of different media affect the direction in which light travels?

5900

      1. What is meant by chromatic dispersion?
      2. What is refraction?
      3. What is meant by the normal?
      4. How is chromatic dispersion related to refraction?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6000

      1. What is meant by chromatic dispersion?
      2. What is refraction?
      3. What is meant by the normal?
      4. How is chromatic dispersion related to refraction?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6100

      1. What is incident light?
      2. What is reflection?
      3. What is meant by the normal?
      4. When light stikes a surface is the angle of incidence always the same as the angle of reflection?
      5. Where are the angles of incidence and reflection drawn on a ray diagram?

6200

      1. What is refraction?
      2. What is reflection?
      3. What is meant by the normal?
      4. When light stikes a surface is the angle of incidence always the same as the angle of reflection?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6300

      1. What is refraction?
      2. What is reflection?
      3. What is meant by the normal?
      4. When light stikes a surface is the angle of incidence always the same as the angle of reflection?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6400

      1. What is refraction?
      2. What is reflection?
      3. What is meant by the normal?
      4. When light stikes a surface is the angle of incidence always the same as the angle of reflection?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6600

      1. What is refraction?
      2. What is meant by the normal?
      3. Will light bend towards the normal as it crosses the boundary between air and glass?
      4. Does light travel faster in air than in glass?
      5. Does chromatic dispersion take place as white light travels from air into glass?

6650

      1. What is refraction?
      2. What is meant by the normal?
      3. Will light bend away the normal as it crosses the boundary between glass and air?
      4. Does light travel faster in air than in glass?
      5. Does chromatic dispersion take place as white light travels from air into glass?

6660

      1. What is meant by chromatic dispersion?
      2. What is refraction?
      3. What is meant by the normal?
      4. How is chromatic dispersion related to refraction?
      5. Will light bend towards the normal as it crosses the boundary between air and glass?

6670

      1. What is refraction?
      2. What is meant by the normal?
      3. Will light bend towards the normal as it crosses the boundary between air and glass?
      4. Does light travel faster in air than in glass?
      5. Does chromatic dispersion take place as white light travels from air into glass?

6680

      1. What is refraction?
      2. What is meant by the normal?
      3. Will light bend towards the normal as it crosses the boundary between air and glass?
      4. How is wavelength affacted as light travel from air into glass?
      5. How is frequency affacted as light travel from air into glass?