Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 397 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a battery cell
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
5. 5.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
6. 6.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a clear glass of water (d) a magnet
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a balloon
8. 8.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
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 change it (b) we keep it the same (c) we measure it
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a mirror
12. 12.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
13. 13.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
14. 14.🌈 In VIBGYOR, what number colour is blue?
15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
16. 16.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
17. 17.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
19. 19.🌈 In VIBGYOR, what number colour is green?
20. 20.⚖️ 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 glass (c) the same window (d) the same white paper
21. 21.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
22. 22.⚖️ 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 measure it (c) we change it
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
25. 25.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
26. 26.⚖️ 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 amount of water (c) the same window (d) the same glass
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
30. 30.⚖️ 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) True (b) False
31. 31.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
32. 32.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
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? True or false: the same window is kept the same. (a) False (b) True
35. 35.🌈 In VIBGYOR, what number colour is indigo?
36. 36.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
38. 38.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
39. 39.⚖️ 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 keep it the same (c) we change it
40. 40.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed

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