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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 132 · 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.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
  2. 2.🌈 In VIBGYOR, what number colour is yellow?
  3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
  4. 4.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
  5. 5.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
  6. 6.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a battery cell (d) a balloon
  7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
  8. 8.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sheet of white paper
  9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
  10. 10.🧺 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
  11. 11.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  12. 12.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a mirror (d) turmeric powder
  13. 13.⚖️ 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
  14. 14.🌈 In VIBGYOR, what number colour is blue?
  15. 15.🌈 In VIBGYOR, what number colour is orange?
  16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
  17. 17.🧺 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 sheet of white paper (d) a balloon
  18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  19. 19.🌈 In VIBGYOR, what number colour is green?
  20. 20.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
  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 time of day (b) brightness of rainbow (c) the same glass (d) the same white paper
  22. 22.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
  23. 23.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sunny window
  24. 24.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
  25. 25.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
  26. 26.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
  27. 27.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
  28. 28.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
  29. 29.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
  30. 30.🌈 In VIBGYOR, what number colour is indigo?
  31. 31.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  32. 32.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) yeast
  34. 34.⚖️ 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) True (b) False
  35. 35.⚖️ 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
  36. 36.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
  37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
  38. 38.⚖️ 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) True (b) False
  39. 39.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
  40. 40.True or false: yeast is not needed for the water rainbow. (a) False (b) True

Answer key

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

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