Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 623 · 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.🌈 In VIBGYOR, what number colour is yellow?
2. 2.⚖️ 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 window (c) brightness of rainbow (d) the same glass
3. 3.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
4. 4.🔮 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) snow falling (d) a magnet
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
6. 6.⚖️ 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
7. 7.🔮 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
8. 8.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sunny window (d) a clear glass of water
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same window (c) the amount of water (d) the same glass
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
17. 17.🌈 In VIBGYOR, what number colour is violet?
18. 18.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a balloon (d) a battery cell
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
20. 20.⚖️ 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
21. 21.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
22. 22.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
25. 25.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
28. 28.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
29. 29.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) yeast
35. 35.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a battery cell (d) a mirror
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
38. 38.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) red (d) violet
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
40. 40.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you

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