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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 396 · 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.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
  3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
  4. 4.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  5. 5.⚖️ 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
  6. 6.🛟 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
  7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) a sheet of white paper (d) bright sunlight
  8. 8.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
  9. 9.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a sunny window (d) bright sunlight
  10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
  11. 11.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
  12. 12.⚖️ 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 glass (c) brightness of rainbow (d) the same window
  13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
  14. 14.⚖️ 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 window (b) the amount of water (c) the time of day (d) brightness of rainbow
  15. 15.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
  16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a sunny window
  17. 17.⚖️ 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 same white paper (c) the amount of water
  18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
  20. 20.⚖️ 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
  21. 21.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
  22. 22.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
  23. 23.⚖️ 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
  24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
  25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
  26. 26.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
  27. 27.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
  28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
  29. 29.🌈 In VIBGYOR, what number colour is orange?
  30. 30.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
  31. 31.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
  32. 32.⚖️ 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
  33. 33.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a mirror
  34. 34.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
  35. 35.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) snow falling (d) a small rainbow
  36. 36.⚖️ 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
  37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
  38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
  39. 39.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
  40. 40.⚖️ 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

Answer key

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

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