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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 978 · 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.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
  2. 2.🛟 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
  3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
  4. 4.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) a sunny window
  6. 6.⚖️ 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) False (b) True
  7. 7.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
  8. 8.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a clear glass of water (d) a battery cell
  9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
  10. 10.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
  11. 11.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
  12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
  13. 13.🌈 In VIBGYOR, what number colour is red?
  14. 14.⚖️ 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
  15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (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 clear glass of water (c) a sunny window (d) a balloon
  17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
  18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
  19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  20. 20.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a magnet (d) bright sunlight
  21. 21.⚖️ 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
  22. 22.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a sheet of white paper
  23. 23.⚖️ 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 white paper (b) the time of day (c) the amount of water (d) the same glass
  24. 24.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
  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) brightness of rainbow (b) the amount of water (c) the same white paper
  26. 26.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
  27. 27.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sheet of white paper (d) yeast
  28. 28.🌈 In VIBGYOR, what number colour is indigo?
  29. 29.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
  30. 30.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a battery cell (c) bright sunlight (d) a sheet of white paper
  31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
  32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
  33. 33.⚖️ 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) True (b) False
  34. 34.🌈 In VIBGYOR, what number colour is violet?
  35. 35.⚖️ 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
  36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
  37. 37.⚖️ 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 same white paper (b) the same window (c) brightness of rainbow (d) the time of day
  38. 38.🧺 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) turmeric powder
  39. 39.⚖️ 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
  40. 40.⚖️ 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 time of day

Answer key

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

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