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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 89 · 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.⚖️ 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
  2. 2.⚖️ 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) the amount of water (d) brightness of rainbow
  3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  4. 4.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
  5. 5.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
  7. 7.🛟 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
  8. 8.⚖️ 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 change it (c) we measure it
  9. 9.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
  10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
  11. 11.🛟 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
  12. 12.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
  13. 13.☀️ 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
  14. 14.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
  15. 15.🧺 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 sunny window (d) yeast
  16. 16.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
  17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
  18. 18.⚖️ 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) True (b) False
  19. 19.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a sheet of white paper (d) a mirror
  20. 20.🌈 In VIBGYOR, what number colour is green?
  21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
  22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
  23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a clear glass of water
  25. 25.⚖️ 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) brightness of rainbow (c) the time of day
  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.⚖️ 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
  28. 28.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
  29. 29.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
  30. 30.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
  31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
  32. 32.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
  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 kept the same. (a) True (b) False
  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 same glass (b) the same white paper (c) the same window (d) the amount of water
  35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a balloon
  36. 36.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
  37. 37.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a balloon (d) a magnet
  38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
  39. 39.⚖️ 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) True (b) False
  40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) bright sunlight

Answer key

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

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