Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 294 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.🌈 In VIBGYOR, what number colour is green?
3. 3.⚖️ 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 amount of water (c) the same window
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
5. 5.🌈 In VIBGYOR, what number colour is yellow?
6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
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 what we measure. (a) True (b) False
8. 8.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
9. 9.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
11. 11.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
12. 12.⚖️ 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 white paper (d) the same glass
13. 13.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) turmeric powder (d) a sunny window
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
15. 15.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
16. 16.🛟 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
17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
18. 18.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
19. 19.⚖️ 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) the time of day (c) brightness of rainbow
20. 20.⚖️ 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 same glass (b) the amount of water (c) brightness of rainbow
21. 21.🧺 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) yeast (d) bright sunlight
22. 22.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
23. 23.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
24. 24.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
25. 25.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a clear glass of water (d) a balloon
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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) False (b) True
30. 30.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
31. 31.⚖️ 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
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
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) the same white paper (b) the amount of water (c) brightness of rainbow
34. 34.True or false: a balloon is needed for the water rainbow. (a) True (b) False
35. 35.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
37. 37.🌈 In VIBGYOR, what number colour is violet?
38. 38.True or false: yeast is not needed for the water rainbow. (a) True (b) False
39. 39.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
40. 40.⚖️ 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

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