← Make a rainbow with water and sunlight lesson New set →

Rainbow Science Experiment Worksheet

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

Answer key

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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids