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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 16 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
  2. 2.🌈 In VIBGYOR, what number colour is indigo?
  3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
  4. 4.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
  6. 6.⚖️ 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 measure it (c) we keep it the same
  7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
  8. 8.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a balloon (d) yeast
  9. 9.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a clear glass of water (d) yeast
  10. 10.⚖️ 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 amount of water (b) the same glass (c) the same window (d) brightness of rainbow
  11. 11.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
  12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
  13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
  14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a clear glass of water
  15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
  16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) turmeric powder
  17. 17.⚖️ 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
  18. 18.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a mirror (d) a sheet of white paper
  19. 19.🌈 In VIBGYOR, what number colour is blue?
  20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) yeast
  21. 21.🌈 In VIBGYOR, what number colour is violet?
  22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
  23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a balloon
  24. 24.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  25. 25.🌈 In VIBGYOR, what number colour is orange?
  26. 26.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
  27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
  28. 28.🧺 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 magnet (d) a sunny window
  29. 29.⚖️ 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
  30. 30.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  31. 31.⚖️ 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) the amount of water (b) the time of day (c) brightness of rainbow (d) the same white paper
  32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
  33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
  34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
  35. 35.⚖️ 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) the time of day (c) brightness of rainbow
  36. 36.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
  38. 38.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
  39. 39.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
  40. 40.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted

Answer key

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

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