Rainbow Science Experiment Worksheet

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

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