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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 203 · 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) a clear glass of water (c) yeast (d) a sheet of white paper
  2. 2.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a balloon (d) bright sunlight
  3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  4. 4.⚖️ 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 amount of water (b) the same window (c) brightness of rainbow (d) the same white paper
  5. 5.🌈 In VIBGYOR, what number colour is green?
  6. 6.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
  7. 7.⚖️ 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 window (b) brightness of rainbow (c) the amount of water (d) the same glass
  8. 8.⚖️ 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
  9. 9.🌈 In VIBGYOR, what number colour is indigo?
  10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
  11. 11.⚖️ 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
  12. 12.🌈 In VIBGYOR, what number colour is yellow?
  13. 13.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a clear glass of water (d) yeast
  14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) turmeric powder (d) a sunny window
  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 what we measure. (a) False (b) True
  16. 16.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
  17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
  18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
  19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
  20. 20.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
  21. 21.⚖️ 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) the time of day (c) brightness of rainbow
  22. 22.⚖️ 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
  23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
  24. 24.⚖️ 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
  25. 25.🛟 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 does not fall (d) so it turns blue
  26. 26.🧺 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 balloon
  27. 27.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
  28. 28.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
  29. 29.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
  30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
  31. 31.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) in front of you (d) behind you
  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 the one thing we change. (a) True (b) False
  33. 33.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
  34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
  35. 35.🧺 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
  36. 36.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
  37. 37.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (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 change it (b) we measure it (c) we keep it the same
  39. 39.⚖️ 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) False (b) True
  40. 40.⚖️ 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

Answer key

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

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