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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 765 · 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.🌈 In VIBGYOR, what number colour is indigo?
  3. 3.🌈 In VIBGYOR, what number colour is blue?
  4. 4.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
  5. 5.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
  6. 6.🌈 In VIBGYOR, what number colour is orange?
  7. 7.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) yeast (d) a clear glass of water
  8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
  9. 9.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
  10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
  11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
  12. 12.True or false: a mirror is needed for the water rainbow. (a) False (b) True
  13. 13.🧺 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 sheet of white paper (d) yeast
  14. 14.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
  15. 15.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a clear glass of water
  16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
  17. 17.🔮 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
  18. 18.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a battery cell (d) bright sunlight
  19. 19.🌈 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
  20. 20.🌈 In VIBGYOR, what number colour is violet?
  21. 21.⚖️ 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
  22. 22.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
  23. 23.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
  24. 24.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
  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 bright sunlight for the water rainbow? (a) not needed (b) needed
  27. 27.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
  28. 28.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) in front of you (d) straight above you
  29. 29.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sunny window (c) a sheet of white paper (d) bright sunlight
  30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
  31. 31.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sheet of white paper (d) a magnet
  32. 32.⚖️ 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
  33. 33.True or false: a balloon is needed for the water rainbow. (a) False (b) True
  34. 34.⚖️ 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 time of day (b) the same white paper (c) the same glass (d) the amount of water
  35. 35.🌈 In VIBGYOR, what number colour is red?
  36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
  37. 37.⚖️ 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
  38. 38.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  39. 39.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
  40. 40.🌈 In VIBGYOR, what number colour is yellow?

Answer key

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

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