Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 632 · 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.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) orange (d) red
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
4. 4.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a magnet (d) a clear glass of water
5. 5.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
6. 6.⚖️ 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 measure it (c) we change it
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
8. 8.🛟 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
9. 9.⚖️ 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) True (b) False
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
11. 11.🔮 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
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a clear glass of water (d) a sunny window
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) bright sunlight (d) a sheet of white paper
15. 15.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) turmeric powder (d) a clear glass of water
17. 17.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
18. 18.⚖️ 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 same window (c) the same glass (d) the same white paper
19. 19.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water
20. 20.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
21. 21.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
22. 22.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
23. 23.⚖️ 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) brightness of rainbow (c) the same white paper
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.⚖️ 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) the same glass (d) the same white paper
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
29. 29.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) a balloon (d) a magnet
30. 30.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
31. 31.🌦️ 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
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a sheet of white paper (d) a sunny window
33. 33.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a battery cell (d) a magnet
35. 35.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
36. 36.True or false: a balloon is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
38. 38.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a balloon (d) a battery cell
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
40. 40.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed

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