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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 42 · 40 questions
TalentJR

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

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  1. 1.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a battery cell
  3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
  4. 4.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
  5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
  6. 6.🌈 In VIBGYOR, what number colour is yellow?
  7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
  8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
  9. 9.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
  10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
  11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) yellow (d) red
  12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a clear glass of water (d) bright sunlight
  13. 13.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a mirror (d) bright sunlight
  14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a sunny window
  15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a balloon
  16. 16.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) turmeric powder (d) a sunny window
  17. 17.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
  18. 18.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
  19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
  20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same white paper
  21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) brightness of rainbow (c) the same white paper (d) the amount of water
  22. 22.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
  23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
  24. 24.🌈 In VIBGYOR, what number colour is red?
  25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
  26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same glass
  27. 27.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
  28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
  29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same window
  30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
  31. 31.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) turmeric powder (d) a mirror
  32. 32.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
  34. 34.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a balloon (d) a mirror
  35. 35.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a battery cell (d) a sunny window
  36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
  37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
  38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) brightness of rainbow (b) the same glass (c) the same white paper (d) the amount of water
  39. 39.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
  40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False

Answer key

  1. 7
  2. a battery cell
  3. never look at the Sun
  4. needed
  5. we measure it
  6. 5
  7. False
  8. needed
  9. refraction
  10. the rainbow fades
  11. violet
  12. a magnet
  13. bright sunlight
  14. turmeric powder
  15. a balloon
  16. a sunny window
  17. needed
  18. not needed
  19. we keep it the same
  20. the same white paper
  21. brightness of rainbow
  22. many colours mixed
  23. a mirror
  24. 7
  25. True
  26. the same glass
  27. not needed
  28. False
  29. the same window
  30. so it does not fall
  31. a clear glass of water
  32. False
  33. we change it
  34. a sheet of white paper
  35. a battery cell
  36. we keep it the same
  37. we keep it the same
  38. the amount of water
  39. True
  40. True

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