Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 15 · 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.🛟 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
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a clear glass of water
3. 3.True or false: a mirror is needed for the water rainbow. (a) True (b) False
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a sheet of white paper (d) bright sunlight
6. 6.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
7. 7.⚖️ 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) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🌈 In VIBGYOR, what number colour is indigo?
10. 10.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
11. 11.⚖️ 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 measure it (c) we change it
12. 12.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
13. 13.⚖️ 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 same glass (d) the time of day
14. 14.⚖️ 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) brightness of rainbow (d) the time of day
15. 15.🌈 In VIBGYOR, what number colour is red?
16. 16.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
17. 17.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
18. 18.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
20. 20.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a magnet (d) a battery cell
21. 21.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a magnet (d) a clear glass of water
22. 22.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
23. 23.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
24. 24.🌈 In VIBGYOR, what number colour is green?
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
29. 29.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
30. 30.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
31. 31.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
32. 32.🧺 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
33. 33.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sheet of white paper (d) a sunny window
35. 35.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
38. 38.True or false: yeast is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 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) turmeric powder
40. 40.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True

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