Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 635 · 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.⚖️ 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 change it (b) we keep it the same (c) we measure it
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ 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
4. 4.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
5. 5.🧺 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 sheet of white paper
6. 6.⚖️ 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
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 what we measure. (a) True (b) False
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a balloon (d) a battery cell
10. 10.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a balloon (d) a battery cell
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
12. 12.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
14. 14.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
15. 15.🌈 In VIBGYOR, what number colour is orange?
16. 16.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
17. 17.🧺 Do we need yeast 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? What do we do with “the time of day”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a sheet of white paper (d) bright sunlight
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) bright sunlight
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
25. 25.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
26. 26.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
27. 27.⚖️ 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 white paper (b) the amount of water (c) the same glass (d) brightness of rainbow
28. 28.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
29. 29.⚖️ 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 white paper (b) the amount of water (c) the time of day (d) the same glass
30. 30.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
31. 31.⚖️ 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) False (b) True
32. 32.🌈 In VIBGYOR, what number colour is yellow?
33. 33.⚖️ 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
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.🌈 In VIBGYOR, what number colour is indigo?
36. 36.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
37. 37.🌈 In VIBGYOR, what number colour is red?
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True

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