Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 162 · 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.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
2. 2.🔮 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
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a clear glass of water (d) turmeric powder
5. 5.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
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) False (b) True
8. 8.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a mirror (d) a balloon
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
10. 10.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
12. 12.⚖️ 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
13. 13.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
14. 14.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
17. 17.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
22. 22.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
24. 24.⚖️ 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
25. 25.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) orange (d) yellow
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.🌈 In VIBGYOR, what number colour is orange?
28. 28.⚖️ 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 time of day
29. 29.True or false: yeast is needed for the water rainbow. (a) False (b) True
30. 30.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) bright sunlight
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) a sheet of white paper
36. 36.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a mirror
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed

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