Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 833 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a clear glass of water
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
5. 5.True or false: yeast is not needed for the water rainbow. (a) False (b) True
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a sunny window
8. 8.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
9. 9.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a magnet (d) a sunny window
12. 12.⚖️ 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 same white paper (c) brightness of rainbow
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a clear glass of water (d) a sunny window
14. 14.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
15. 15.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
16. 16.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a battery cell (d) bright sunlight
17. 17.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
18. 18.⚖️ 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 window (b) the amount of water (c) brightness of rainbow (d) the same white paper
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.True or false: bright sunlight 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 the one thing we change. (a) False (b) True
22. 22.⚖️ 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 change it (c) we measure it
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
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 kept the same. (a) False (b) True
25. 25.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
26. 26.True or false: yeast is 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 kept the same? (a) the amount of water (b) brightness of rainbow (c) the same window
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) bright sunlight
29. 29.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
30. 30.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
31. 31.🔮 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
32. 32.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is violet?
34. 34.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a battery cell
36. 36.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) a sheet of white paper (d) bright sunlight

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