Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 575 · 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? 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
2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
3. 3.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a mirror (d) a sunny window
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
5. 5.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
6. 6.⚖️ 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) True (b) False
7. 7.⚖️ 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
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
10. 10.⚖️ 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 keep it the same (c) we measure it
11. 11.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) bright sunlight (d) a clear glass of water
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) a clear glass of water (d) bright sunlight
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) a clear glass of water
16. 16.True or false: a magnet is needed for the water rainbow. (a) False (b) True
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a magnet (d) turmeric powder
20. 20.⚖️ 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
21. 21.🧺 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 battery cell
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
23. 23.🌈 In VIBGYOR, what number colour is yellow?
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
27. 27.🌈 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
28. 28.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
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.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) bright sunlight (d) a mirror
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a mirror
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
36. 36.🛟 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
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a sunny window
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
40. 40.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow

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