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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 82 · 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.🌈 In VIBGYOR, what number colour is indigo?
  2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
  4. 4.⚖️ 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 amount of water (b) brightness of rainbow (c) the same white paper (d) the time of day
  5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
  6. 6.⚖️ 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
  7. 7.🛟 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
  8. 8.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
  9. 9.🛟 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
  10. 10.⚖️ 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 change it (b) we measure it (c) we keep it the same
  11. 11.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
  12. 12.⚖️ 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 keep it the same (c) we measure it
  13. 13.⚖️ 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) True (b) False
  14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) bright sunlight (d) a clear glass of water
  15. 15.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
  16. 16.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) violet (d) orange
  17. 17.⚖️ 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
  18. 18.🔮 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
  19. 19.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
  20. 20.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
  21. 21.🌈 In VIBGYOR, what number colour is orange?
  22. 22.⚖️ 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 keep it the same (c) we measure it
  23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a battery cell
  24. 24.⚖️ 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
  25. 25.⚖️ 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 window (c) the same glass (d) the amount of water
  26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sheet of white paper
  27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
  28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) yeast (d) a clear glass of water
  29. 29.🧺 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 magnet (d) a sheet of white paper
  30. 30.🌈 In VIBGYOR, what number colour is violet?
  31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
  32. 32.⚖️ 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
  33. 33.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a battery cell (d) a sheet of white paper
  34. 34.🧺 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 balloon (d) a sheet of white paper
  35. 35.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) a battery cell (d) a balloon
  36. 36.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a magnet (d) a balloon
  37. 37.⚖️ 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
  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 what we measure. (a) False (b) True
  39. 39.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell

Answer key

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

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