Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 339 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
2. 2.⚖️ 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
3. 3.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🧺 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) a battery cell (d) a sunny window
6. 6.⚖️ 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 white paper
7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a sheet of white paper (d) yeast
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) bright sunlight (d) a sunny window
9. 9.True or false: bright sunlight 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? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
12. 12.True or false: a balloon is needed for the water rainbow. (a) True (b) False
13. 13.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a clear glass of water (d) a mirror
14. 14.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
15. 15.🌈 In VIBGYOR, what number colour is violet?
16. 16.True or false: yeast is not needed for the water rainbow. (a) False (b) True
17. 17.⚖️ 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) True (b) False
18. 18.⚖️ 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
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
22. 22.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
23. 23.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
24. 24.⚖️ 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 glass
25. 25.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) yeast (d) turmeric powder
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a sunny window
27. 27.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
28. 28.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a mirror
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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) True (b) False
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) brightness of rainbow (b) the same window (c) the amount of water
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🌈 In VIBGYOR, what number colour is green?
36. 36.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.True or false: a balloon is not 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? Which of these is the one thing we change? (a) brightness of rainbow (b) the time of day (c) the same glass (d) the amount of water

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