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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 450 · 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.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
  2. 2.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
  3. 3.🌈 In VIBGYOR, what number colour is green?
  4. 4.⚖️ 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
  5. 5.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
  6. 6.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
  7. 7.⚖️ 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) False (b) True
  8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  9. 9.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  10. 10.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
  11. 11.🌈 In VIBGYOR, what number colour is yellow?
  12. 12.⚖️ 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
  13. 13.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
  14. 14.⚖️ 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 white paper (c) the same glass (d) brightness of rainbow
  15. 15.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) turmeric powder (d) a sunny window
  17. 17.🌈 In VIBGYOR, what number colour is indigo?
  18. 18.🛟 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 gets hot (d) so it does not fall
  19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a mirror
  20. 20.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a clear glass of water (d) yeast
  21. 21.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
  22. 22.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
  23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) a clear glass of water
  24. 24.True or false: a balloon is needed for the water rainbow. (a) True (b) False
  25. 25.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  26. 26.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  27. 27.🔮 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
  28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) turmeric powder
  29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sunny window
  30. 30.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
  31. 31.⚖️ 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
  32. 32.🌈 In VIBGYOR, what number colour is red?
  33. 33.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
  34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
  35. 35.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
  36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
  37. 37.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a battery cell (d) turmeric powder
  38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
  39. 39.🌈 In VIBGYOR, what number colour is violet?
  40. 40.True or false: a balloon is not needed for the water rainbow. (a) False (b) True

Answer key

  1. behind you
  2. True
  3. 4
  4. we keep it the same
  5. True
  6. True
  7. False
  8. 7
  9. needed
  10. a small rainbow
  11. 5
  12. True
  13. True
  14. brightness of rainbow
  15. False
  16. turmeric powder
  17. 2
  18. so it does not fall
  19. a mirror
  20. a clear glass of water
  21. many colours mixed
  22. red
  23. a magnet
  24. False
  25. False
  26. needed
  27. the rainbow fades
  28. turmeric powder
  29. a magnet
  30. needed
  31. we measure it
  32. 7
  33. not needed
  34. we keep it the same
  35. needed
  36. not needed
  37. bright sunlight
  38. a balloon
  39. 1
  40. True

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