Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 36 · 40 questions

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.

1. 1.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
3. 3.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🛟 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
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) bright sunlight
7. 7.🌈 In VIBGYOR, what number colour is green?
8. 8.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a balloon
10. 10.⚖️ 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
11. 11.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
12. 12.⚖️ 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 keep it the same (c) we measure it
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) bright sunlight
14. 14.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
15. 15.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) a sheet of white paper (d) turmeric powder
16. 16.🌈 In VIBGYOR, what number colour is red?
17. 17.⚖️ 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) True (b) False
18. 18.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) blue (d) violet
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
23. 23.⚖️ 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 measure it (c) we change it
24. 24.⚖️ 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) the time of day (c) brightness of rainbow (d) the amount of water
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
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) brightness of rainbow (b) the amount of water (c) the same white paper (d) the same glass
27. 27.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a balloon (d) yeast
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) yeast
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a sunny window (d) a mirror
34. 34.True or false: a balloon is needed for the water rainbow. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: a mirror is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
38. 38.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
39. 39.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) yeast (c) a balloon (d) turmeric powder
40. 40.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall

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