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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 766 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
  2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet
  4. 4.⚖️ 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 keep it the same (c) we measure it
  5. 5.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
  7. 7.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a balloon (d) a sheet of white paper
  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 glass”? (a) we keep it the same (b) we measure it (c) we change it
  9. 9.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a battery cell (d) a balloon
  10. 10.🌈 In VIBGYOR, what number colour is green?
  11. 11.True or false: bright sunlight 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) brightness of rainbow (c) the same window (d) the time of day
  13. 13.🧺 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 clear glass of water (d) a battery cell
  14. 14.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
  15. 15.🌈 In VIBGYOR, what number colour is blue?
  16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
  17. 17.⚖️ 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 amount of water (c) the same white paper (d) the same window
  18. 18.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) water splits the light (d) the paper makes colours
  19. 19.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) straight above you (d) under the ground
  20. 20.⚖️ 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) True (b) False
  21. 21.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
  22. 22.🧺 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
  23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a mirror
  24. 24.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  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 same white paper
  26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) bright sunlight (d) yeast
  27. 27.🧺 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) a sunny window (d) a balloon
  28. 28.⚖️ 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
  29. 29.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
  30. 30.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
  31. 31.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  32. 32.⚖️ 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
  33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) bright sunlight (d) a clear glass of water
  34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
  35. 35.⚖️ 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 glass (c) the amount of water
  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 kept the same. (a) False (b) True
  37. 37.⚖️ 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
  38. 38.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a balloon (d) turmeric powder
  39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
  40. 40.True or false: yeast is not needed for the water rainbow. (a) True (b) False

Answer key

  1. prisms
  2. 7
  3. a magnet
  4. we change it
  5. needed
  6. so it does not fall
  7. a sheet of white paper
  8. we keep it the same
  9. a clear glass of water
  10. 4
  11. False
  12. brightness of rainbow
  13. a battery cell
  14. a small rainbow
  15. 3
  16. False
  17. the amount of water
  18. water splits the light
  19. behind you
  20. True
  21. many colours mixed
  22. a magnet
  23. a mirror
  24. not needed
  25. the same white paper
  26. bright sunlight
  27. a balloon
  28. False
  29. not needed
  30. False
  31. needed
  32. False
  33. yeast
  34. the rainbow fades
  35. the same glass
  36. True
  37. False
  38. a sunny window
  39. we keep it the same
  40. True

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