Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 468 · 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 does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
2. 2.🌈 In VIBGYOR, what number colour is red?
3. 3.🧺 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 magnet (d) a sheet of white paper
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
5. 5.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
6. 6.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
7. 7.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
8. 8.⚖️ 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 same window (b) the amount of water (c) the same glass (d) brightness of rainbow
9. 9.⚖️ 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
10. 10.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
11. 11.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
14. 14.⚖️ 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
15. 15.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) bright sunlight
19. 19.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
20. 20.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a battery cell
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a mirror (d) a sunny window
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
23. 23.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
24. 24.True or false: yeast is needed for the water rainbow. (a) True (b) False
25. 25.⚖️ 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
26. 26.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the water is coloured (d) the glass is painted
27. 27.True or false: a balloon is needed for the water rainbow. (a) False (b) True
28. 28.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper
29. 29.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a sunny window (d) a clear glass of water
31. 31.⚖️ 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 time of day (b) brightness of rainbow (c) the same white paper (d) the same window
32. 32.🌈 In VIBGYOR, what number colour is indigo?
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.True or false: a magnet is needed for the water rainbow. (a) False (b) True
36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
38. 38.⚖️ 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
39. 39.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed

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