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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 218 · 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.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ 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 glass
  2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
  3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
  5. 5.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
  6. 6.True or false: a balloon 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? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
  8. 8.🛟 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 turns blue (d) so it does not fall
  9. 9.⚖️ 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 change it (c) we measure it
  10. 10.⚖️ 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
  11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
  12. 12.⚖️ 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
  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.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
  15. 15.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a battery cell (c) yeast (d) a balloon
  16. 16.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
  17. 17.⚖️ 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
  18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
  19. 19.⚖️ 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 window (b) brightness of rainbow (c) the amount of water (d) the same glass
  20. 20.⚖️ 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
  21. 21.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
  22. 22.⚖️ 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
  23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
  24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) yeast
  25. 25.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
  26. 26.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) in front of you (d) straight above you
  27. 27.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
  28. 28.🧺 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) bright sunlight (d) a balloon
  29. 29.⚖️ 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 amount of water (b) the same window (c) the same glass (d) the same white paper
  30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
  31. 31.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
  32. 32.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
  33. 33.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
  34. 34.⚖️ 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 change it (c) we measure it
  35. 35.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
  36. 36.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
  37. 37.🧺 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) a sunny window (d) yeast
  38. 38.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
  39. 39.⚖️ 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
  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 keep it the same (c) we change it

Answer key

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

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