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Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 415 · 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.⚖️ 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
  2. 2.🧺 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 battery cell (d) bright sunlight
  3. 3.⚖️ 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
  4. 4.🔮 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
  5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
  6. 6.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
  7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) a magnet (d) turmeric powder
  8. 8.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a battery cell (d) bright sunlight
  9. 9.🛟 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
  10. 10.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
  11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
  12. 12.⚖️ 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 change it (c) we keep it the same
  13. 13.⚖️ 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
  14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sunny window (d) a sheet of white paper
  15. 15.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
  16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
  17. 17.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a sheet of white paper (d) yeast
  18. 18.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
  19. 19.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
  20. 20.⚖️ 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) False (b) True
  21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet
  22. 22.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
  23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
  24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
  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 the one thing we change. (a) True (b) False
  26. 26.⚖️ 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 glass (b) the amount of water (c) the same window (d) brightness of rainbow
  27. 27.⚖️ 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
  28. 28.🧺 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) bright sunlight (d) yeast
  29. 29.⚖️ 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
  30. 30.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
  31. 31.⚖️ 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 time of day (b) the same glass (c) the same window (d) the amount of water
  32. 32.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
  33. 33.🌈 In VIBGYOR, what number colour is red?
  34. 34.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) straight above you (d) behind you
  35. 35.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
  36. 36.⚖️ 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 time of day (c) the amount of water
  37. 37.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
  38. 38.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a battery cell (d) a magnet
  39. 39.⚖️ 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
  40. 40.⚖️ 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 keep it the same (c) we change it

Answer key

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

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