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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 524 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
  2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
  3. 3.⚖️ 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 same window
  4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
  5. 5.⚖️ 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
  6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  7. 7.⚖️ 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 glass (c) the time of day (d) brightness of rainbow
  8. 8.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
  9. 9.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
  10. 10.⚖️ 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 glass
  11. 11.🌈 In VIBGYOR, what number colour is indigo?
  12. 12.⚖️ 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
  13. 13.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
  14. 14.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a magnet (d) bright sunlight
  15. 15.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
  16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a mirror (d) bright sunlight
  17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
  18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
  19. 19.🌈 In VIBGYOR, what number colour is yellow?
  20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a magnet (d) bright sunlight
  21. 21.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
  22. 22.🛟 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
  23. 23.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
  24. 24.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  25. 25.⚖️ 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) False (b) True
  26. 26.⚖️ 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
  27. 27.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
  28. 28.⚖️ 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 measure it (c) we keep it the same
  29. 29.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
  30. 30.⚖️ 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) brightness of rainbow (c) the amount of water
  31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
  32. 32.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) under the ground (d) in front of you
  33. 33.⚖️ 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 time of day (d) the same glass
  34. 34.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
  35. 35.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
  36. 36.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) turmeric powder (d) a magnet
  37. 37.🧺 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 battery cell
  38. 38.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
  39. 39.🌈 In VIBGYOR, what number colour is red?
  40. 40.⚖️ 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) True (b) False

Answer key

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

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