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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 570 · 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? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a clear glass of water
  3. 3.True or false: yeast is not needed for the water rainbow. (a) True (b) False
  4. 4.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
  5. 5.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
  6. 6.⚖️ 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
  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 what we measure. (a) True (b) False
  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 window”? (a) we keep it the same (b) we change it (c) we measure it
  9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a mirror (d) a clear glass of water
  10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
  12. 12.⚖️ 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) True (b) False
  13. 13.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
  14. 14.🛟 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 it turns blue (d) so the Sun moves
  15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
  17. 17.🌈 In VIBGYOR, what number colour is blue?
  18. 18.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
  19. 19.⚖️ 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
  20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
  21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
  22. 22.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a magnet (d) a mirror
  23. 23.🌈 In VIBGYOR, what number colour is orange?
  24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
  25. 25.⚖️ 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 window (c) the same white paper (d) the amount of water
  26. 26.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) behind you (d) straight above you
  27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) yeast (d) bright sunlight
  28. 28.🌈 In VIBGYOR, what number colour is yellow?
  29. 29.True or false: a mirror is needed for the water rainbow. (a) True (b) False
  30. 30.⚖️ 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
  31. 31.⚖️ 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) False (b) True
  32. 32.🌈 In VIBGYOR, what number colour is red?
  33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
  34. 34.⚖️ 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
  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 the one thing we change. (a) False (b) True
  36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
  37. 37.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a magnet
  38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the time of day
  39. 39.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
  40. 40.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted

Answer key

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

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