Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 816 · 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.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
2. 2.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
4. 4.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
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 change it (c) we keep it the same
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it floats away (d) it turns brighter
8. 8.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) yeast
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
10. 10.🛟 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 does not fall (d) so it turns blue
11. 11.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
12. 12.🌈 In VIBGYOR, what number colour is violet?
13. 13.🧺 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) a magnet (d) bright sunlight
14. 14.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) water splits the light (d) the paper makes colours
15. 15.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the same window
16. 16.🌈 In VIBGYOR, what number colour is blue?
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🌈 In VIBGYOR, what number colour is yellow?
20. 20.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) turmeric powder (d) a balloon
21. 21.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
24. 24.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a balloon (d) yeast
25. 25.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
26. 26.⚖️ 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 window (b) brightness of rainbow (c) the time of day (d) the same glass
27. 27.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
28. 28.🌈 In VIBGYOR, what number colour is indigo?
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 white paper (b) the amount of water (c) brightness of rainbow
30. 30.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) red (d) violet
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
34. 34.True or false: yeast is needed for the water rainbow. (a) True (b) False
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.⚖️ 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
37. 37.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a sunny window (d) a mirror
40. 40.⚖️ 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 change it (b) we measure it (c) we keep it the same

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