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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 192 · 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 needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a magnet (d) a mirror
  2. 2.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) yeast (d) a sunny window
  3. 3.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
  4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
  6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
  7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
  8. 8.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
  9. 9.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sheet of white paper
  10. 10.⚖️ 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 same glass (c) the amount of water (d) the same window
  11. 11.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow
  12. 12.🌈 In VIBGYOR, what number colour is yellow?
  13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
  14. 14.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
  15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
  16. 16.⚖️ 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
  17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
  18. 18.True or false: a mirror is needed for the water rainbow. (a) True (b) False
  19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
  20. 20.⚖️ 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
  21. 21.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
  22. 22.🌈 In VIBGYOR, what number colour is red?
  23. 23.🌈 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
  24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
  25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
  26. 26.⚖️ 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) True (b) False
  27. 27.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
  28. 28.🧺 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) turmeric powder (d) bright sunlight
  29. 29.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
  30. 30.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
  31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
  32. 32.⚖️ 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) True (b) False
  33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
  34. 34.⚖️ 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) True (b) False
  35. 35.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
  36. 36.True or false: a balloon is needed for the water rainbow. (a) True (b) False
  37. 37.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
  38. 38.⚖️ 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
  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 the one thing we change. (a) True (b) False
  40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet

Answer key

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

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