Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 49 · 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.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a mirror
4. 4.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a sunny window (d) turmeric powder
5. 5.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
6. 6.🛟 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
7. 7.⚖️ 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
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 window”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
10. 10.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
11. 11.True or false: a magnet is needed for the water rainbow. (a) False (b) True
12. 12.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
13. 13.🌈 In VIBGYOR, what number colour is orange?
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
16. 16.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
17. 17.True or false: yeast is not needed for the water rainbow. (a) False (b) True
18. 18.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a magnet (d) turmeric powder
19. 19.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🧺 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 clear glass of water
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) turmeric powder
27. 27.⚖️ 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
28. 28.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
29. 29.True or false: a balloon is needed for the water rainbow. (a) True (b) False
30. 30.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sunny window
34. 34.🌈 In VIBGYOR, what number colour is green?
35. 35.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sunny window (d) a sheet of white paper
36. 36.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
37. 37.True or false: a mirror is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) yeast
39. 39.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
40. 40.🌈 In VIBGYOR, what number colour is violet?

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