Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 640 · 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.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
2. 2.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue
3. 3.⚖️ 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
4. 4.🌈 In VIBGYOR, what number colour is violet?
5. 5.⚖️ 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) True (b) False
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.🧺 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) turmeric powder
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
11. 11.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
12. 12.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
13. 13.⚖️ 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) the same white paper (c) brightness of rainbow
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a clear glass of water (d) a balloon
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
18. 18.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a mirror (d) a magnet
20. 20.🧺 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 clear glass of water (d) a battery cell
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
22. 22.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
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? What do we do with “the same window”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.True or false: a magnet is needed for the water rainbow. (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 the one thing we change? (a) the same window (b) brightness of rainbow (c) the same glass (d) the amount of water
27. 27.True or false: a balloon is needed for the water rainbow. (a) False (b) True
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
29. 29.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.⚖️ 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 same window (c) the amount of water
33. 33.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) a magnet (d) a sheet of white paper
34. 34.⚖️ 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 same glass (c) the amount of water
35. 35.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
36. 36.🛟 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
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
38. 38.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a clear glass of water
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) a sunny window

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