Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 638 · 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.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
3. 3.True or false: yeast is not needed for the water rainbow. (a) True (b) False
4. 4.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sunny window
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it gets hot (d) so it turns blue
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 glass”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
11. 11.🧺 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 mirror (d) bright sunlight
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a sunny window
13. 13.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
15. 15.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a battery cell (d) turmeric powder
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
18. 18.🌈 In VIBGYOR, what number colour is yellow?
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
20. 20.⚖️ 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
21. 21.⚖️ 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) brightness of rainbow (c) the same window (d) the same glass
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
23. 23.🌈 In VIBGYOR, what number colour is violet?
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a sheet of white paper (d) yeast
26. 26.True or false: a balloon is needed for the water rainbow. (a) True (b) False
27. 27.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) a clear glass of water (d) bright sunlight
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the paper makes colours (d) the water is coloured
32. 32.⚖️ 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 time of day (c) the amount of water (d) brightness of rainbow
33. 33.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a mirror (d) a battery cell
34. 34.⚖️ 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) False (b) True
35. 35.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a clear glass of water
36. 36.⚖️ 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
37. 37.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away

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