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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 702 · 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.

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

Answer key

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

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