Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 87 · 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 what we measure? (a) the same glass (b) brightness of rainbow (c) the amount of water (d) the time of day
2. 2.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) under the ground (d) in front of you
3. 3.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
4. 4.🧺 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 sheet of white paper (d) a battery cell
5. 5.⚖️ 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 window (c) the same glass (d) brightness of rainbow
6. 6.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
7. 7.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
8. 8.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a magnet (d) yeast
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a sunny window (d) a clear glass of water
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) turmeric powder (d) a battery cell
20. 20.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) magnetism (d) reflection
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) a sheet of white paper (d) a clear glass of water
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
23. 23.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a balloon (d) a sheet of white paper
24. 24.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a mirror (d) a sheet of white paper
26. 26.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
27. 27.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
30. 30.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a sheet of white paper (d) a magnet
31. 31.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
32. 32.🌈 In VIBGYOR, what number colour is orange?
33. 33.⚖️ 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 measure it (c) we keep it the same
34. 34.🧺 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 sheet of white paper (d) a mirror
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) orange (d) red
36. 36.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
38. 38.⚖️ 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 same window (c) the amount of water
39. 39.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
40. 40.⚖️ 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

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