Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 806 · 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.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) bright sunlight (d) yeast
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it gets hot (d) so it turns blue
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a battery cell
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
9. 9.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
10. 10.⚖️ 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 glass (b) the amount of water (c) the time of day (d) the same window
11. 11.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) yeast (c) bright sunlight (d) a sunny window
13. 13.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🔮 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
16. 16.🌈 In VIBGYOR, what number colour is indigo?
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.⚖️ 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) True (b) False
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) a sunny window
21. 21.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
23. 23.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
24. 24.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
25. 25.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) orange (d) yellow
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sheet of white paper (d) a clear glass of water
32. 32.⚖️ 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
33. 33.⚖️ 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) the same glass (c) brightness of rainbow (d) the time of day
34. 34.⚖️ 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
35. 35.True or false: a sunny window 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? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
39. 39.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) under the ground (d) in front of you
40. 40.True or false: a balloon is not needed for the water rainbow. (a) True (b) False

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