Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 654 · 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.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
2. 2.⚖️ 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 measure it (c) we change it
3. 3.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
5. 5.⚖️ 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) False (b) True
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.⚖️ 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) False (b) True
8. 8.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
9. 9.⚖️ 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) brightness of rainbow (c) the same white paper (d) the amount of water
10. 10.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
11. 11.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a battery cell (d) a clear glass of water
16. 16.🌈 In VIBGYOR, what number colour is red?
17. 17.🌈 In VIBGYOR, what number colour is indigo?
18. 18.⚖️ 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
19. 19.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
20. 20.🧺 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 magnet (d) bright sunlight
21. 21.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
22. 22.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) straight above you (d) behind you
23. 23.🌈 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
24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
25. 25.⚖️ 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 time of day (c) the amount of water
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) a sheet of white paper
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a sunny window
28. 28.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a magnet
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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a battery cell
32. 32.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a sheet of white paper (d) a battery cell
33. 33.🛟 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
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) yellow (d) red
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
37. 37.True or false: bright sunlight is 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 what we measure? (a) the same window (b) brightness of rainbow (c) the amount of water (d) the same white paper
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a balloon
40. 40.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a sunny window

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