Rainbow Science Experiment Worksheet

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

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