Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 349 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.True or false: yeast is needed for the water rainbow. (a) False (b) True
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) bright sunlight (d) a sunny window
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) yeast (d) a clear glass of water
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
10. 10.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
11. 11.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
12. 12.⚖️ 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 amount of water (c) the same white paper (d) the same window
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
14. 14.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
15. 15.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
17. 17.⚖️ 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) brightness of rainbow (c) the same glass (d) the amount of water
18. 18.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
20. 20.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ 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) True (b) False
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a clear glass of water
25. 25.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) turmeric powder (d) a magnet
26. 26.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) clouds (d) magnets
27. 27.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a balloon (d) a sheet of white paper
29. 29.🌈 In VIBGYOR, what number colour is indigo?
30. 30.⚖️ 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 amount of water (c) the same glass
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) bright sunlight
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) a sunny window
33. 33.⚖️ 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
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 kept the same. (a) True (b) False
35. 35.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) yeast (d) bright sunlight
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
39. 39.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
40. 40.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow

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