Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 865 · 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.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
2. 2.🌈 In VIBGYOR, what number colour is blue?
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🌦️ 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
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a magnet
6. 6.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
8. 8.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a battery cell (d) bright sunlight
10. 10.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
11. 11.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🛟 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
14. 14.⚖️ 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) False (b) True
15. 15.🔮 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
16. 16.🌈 In VIBGYOR, what number colour is indigo?
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
18. 18.🌈 In VIBGYOR, what number colour is violet?
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a balloon
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) bright sunlight
22. 22.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
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 change it (b) we keep it the same (c) we measure it
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 glass (b) the amount of water (c) the same white paper (d) brightness of rainbow
27. 27.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🌈 In VIBGYOR, what number colour is green?
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
32. 32.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a mirror (c) turmeric powder (d) a battery cell
33. 33.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) red (d) violet
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sheet of white paper
35. 35.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a battery cell (d) a clear glass of water
36. 36.⚖️ 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 amount of water (d) the time of day
37. 37.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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 glass (b) brightness of rainbow (c) the amount of water
39. 39.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
40. 40.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True

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