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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 499 · 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.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  2. 2.⚖️ 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) False (b) True
  3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
  4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  5. 5.⚖️ 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
  6. 6.🌈 In VIBGYOR, what number colour is yellow?
  7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
  8. 8.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
  9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
  10. 10.⚖️ 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) False (b) True
  11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
  12. 12.⚖️ 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) False (b) True
  13. 13.⚖️ 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
  14. 14.⚖️ 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) brightness of rainbow (b) the amount of water (c) the same window (d) the same white paper
  15. 15.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
  16. 16.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a mirror (d) a balloon
  17. 17.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a battery cell (d) turmeric powder
  18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
  19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
  20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
  21. 21.⚖️ 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 time of day (b) the same white paper (c) brightness of rainbow (d) the same window
  22. 22.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) turmeric powder (d) yeast
  23. 23.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
  24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a balloon
  25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
  26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a battery cell (d) bright sunlight
  27. 27.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  28. 28.🌈 In VIBGYOR, what number colour is orange?
  29. 29.🧺 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) yeast
  30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
  31. 31.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
  32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
  33. 33.True or false: yeast is not needed for the water rainbow. (a) False (b) True
  34. 34.⚖️ 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
  35. 35.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
  36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
  37. 37.⚖️ 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
  38. 38.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
  39. 39.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
  40. 40.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False

Answer key

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

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