Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 45 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) bright sunlight
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
3. 3.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
4. 4.🌈 In VIBGYOR, what number colour is orange?
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a sunny window
6. 6.⚖️ 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 time of day (c) the same window (d) the same glass
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a mirror
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
11. 11.🌈 In VIBGYOR, what number colour is yellow?
12. 12.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
13. 13.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
15. 15.🌈 In VIBGYOR, what number colour is blue?
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
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 measure it (c) we keep it the same
19. 19.True or false: a mirror is needed for the water rainbow. (a) True (b) False
20. 20.🌈 In VIBGYOR, what number colour is green?
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
22. 22.⚖️ 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) True (b) False
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) behind you (d) in front of you
28. 28.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a balloon (d) turmeric powder
29. 29.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
30. 30.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a balloon (d) a sunny window
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) turmeric powder
33. 33.⚖️ 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
34. 34.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
35. 35.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) yeast (d) a clear glass of water
36. 36.⚖️ 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) brightness of rainbow (c) the amount of water
37. 37.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) bright sunlight (d) a mirror
38. 38.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
39. 39.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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