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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 530 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
  3. 3.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
  5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
  6. 6.🧺 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 sunny window
  7. 7.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a battery cell (d) a mirror
  8. 8.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a mirror (d) a balloon
  9. 9.⚖️ 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) True (b) False
  10. 10.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
  11. 11.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
  13. 13.🌈 In VIBGYOR, what number colour is indigo?
  14. 14.🌈 In VIBGYOR, what number colour is red?
  15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured
  16. 16.⚖️ 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) False (b) True
  17. 17.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
  18. 18.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
  19. 19.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
  20. 20.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sunny window (d) a clear glass of water
  21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a clear glass of water (d) bright sunlight
  22. 22.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
  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 sheet of white paper (d) a mirror
  24. 24.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
  25. 25.🌈 In VIBGYOR, what number colour is orange?
  26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
  27. 27.True or false: a magnet is needed for the water rainbow. (a) True (b) False
  28. 28.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a sunny window
  29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True
  31. 31.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
  32. 32.True or false: bright sunlight is not needed for the water rainbow. (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 window is the one thing we change. (a) True (b) False
  34. 34.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
  35. 35.🌈 In VIBGYOR, what number colour is yellow?
  36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
  37. 37.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
  38. 38.⚖️ 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 white paper (b) the same window (c) the amount of water (d) the same glass
  39. 39.🌈 In VIBGYOR, what number colour is blue?
  40. 40.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False

Answer key

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

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