Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 905 · 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? True or false: brightness of rainbow is what we measure. (a) True (b) False
2. 2.True or false: yeast is needed for the water rainbow. (a) True (b) False
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sunny window (d) a balloon
5. 5.🌈 In VIBGYOR, what number colour is red?
6. 6.🌈 In VIBGYOR, what number colour is yellow?
7. 7.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same window
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a balloon
9. 9.⚖️ 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) False (b) True
10. 10.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
12. 12.🌈 In VIBGYOR, what number colour is violet?
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.⚖️ 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
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) the water is coloured (d) water splits the light
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a mirror (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 the one thing we change? (a) the same window (b) the same glass (c) the amount of water (d) brightness of rainbow
19. 19.🌈 In VIBGYOR, what number colour is blue?
20. 20.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
22. 22.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
23. 23.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
24. 24.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a battery cell (d) yeast
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
26. 26.🧺 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
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
28. 28.True or false: a mirror is 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? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🌦️ 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
31. 31.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
32. 32.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) a clear glass of water (d) bright sunlight
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a battery cell (d) a sheet of white paper
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a clear glass of water
38. 38.🌈 In VIBGYOR, what number colour is green?
39. 39.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
40. 40.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed

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