Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 257 · 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 red?
2. 2.⚖️ 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 window (c) brightness of rainbow
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
4. 4.⚖️ 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 white paper (b) the same window (c) brightness of rainbow (d) the amount of water
5. 5.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a mirror (d) a magnet
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a sunny window
9. 9.🌈 In VIBGYOR, what number colour is violet?
10. 10.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a balloon (d) a battery cell
11. 11.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
12. 12.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
15. 15.⚖️ 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
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ 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 amount of water (d) the same glass
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a magnet
19. 19.⚖️ 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
20. 20.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
21. 21.True or false: a magnet is needed for the water rainbow. (a) False (b) True
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
23. 23.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
24. 24.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
26. 26.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
27. 27.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
28. 28.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
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 same glass (b) brightness of rainbow (c) the amount of water
30. 30.🧺 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 sunny window (d) a balloon
31. 31.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
32. 32.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
33. 33.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a balloon (d) a magnet
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
35. 35.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
37. 37.🌈 In VIBGYOR, what number colour is green?
38. 38.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
39. 39.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
40. 40.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue

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