Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 231 · 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.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
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) turmeric powder (d) a sunny window
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
5. 5.🧺 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) a sunny window (d) a balloon
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) bright sunlight
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) yeast (d) turmeric powder
9. 9.🛟 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
10. 10.🧺 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) a magnet
11. 11.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
13. 13.🌈 In VIBGYOR, what number colour is indigo?
14. 14.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🔮 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
19. 19.⚖️ 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 white paper (c) the same glass (d) brightness of rainbow
20. 20.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
21. 21.☀️ 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
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
24. 24.⚖️ 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
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) yeast
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
27. 27.🛟 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
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
29. 29.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
30. 30.🌈 In VIBGYOR, what number colour is yellow?
31. 31.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
32. 32.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) in front of you (d) straight above you
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
34. 34.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
35. 35.🌈 In VIBGYOR, what number colour is green?
36. 36.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
37. 37.⚖️ 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
38. 38.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
39. 39.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
40. 40.⚖️ 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 glass (b) the same white paper (c) brightness of rainbow (d) the amount of water

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