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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 77 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a battery cell
  2. 2.🧺 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 clear glass of water
  3. 3.⚖️ 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
  4. 4.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
  5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
  6. 6.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
  7. 7.⚖️ 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 same white paper
  8. 8.⚖️ 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 amount of water (d) brightness of rainbow
  9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the amount of water (d) the same window
  10. 10.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
  11. 11.⚖️ 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
  12. 12.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
  13. 13.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
  14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
  15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
  16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  18. 18.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) behind you (d) under the ground
  19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
  20. 20.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a clear glass of water
  21. 21.True or false: a battery cell is not needed for the water rainbow. (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 sheet of white paper (c) a sunny window (d) yeast
  23. 23.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
  24. 24.⚖️ 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
  25. 25.⚖️ 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 keep it the same (c) we change it
  26. 26.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a magnet (d) a battery cell
  27. 27.🌈 In VIBGYOR, what number colour is green?
  28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a magnet
  29. 29.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
  30. 30.⚖️ 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
  31. 31.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) turmeric powder
  32. 32.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  33. 33.⚖️ 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
  34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
  35. 35.⚖️ 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
  36. 36.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) snow falling (d) a magnet
  37. 37.🌈 In VIBGYOR, what number colour is red?
  38. 38.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sheet of white paper (d) bright sunlight
  40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

Answer key

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

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