Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 857 · 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: a battery cell 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 sheet of white paper (b) bright sunlight (c) a clear glass of water (d) yeast
3. 3.⚖️ 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
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) turmeric powder
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) a sheet of white paper
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
12. 12.⚖️ 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
13. 13.⚖️ 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 time of day (c) the same window (d) the same glass
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a mirror (d) a balloon
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 measure it (b) we change it (c) we keep it the same
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
18. 18.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
20. 20.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) turmeric powder (d) a balloon
21. 21.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
22. 22.⚖️ 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 same window (c) the amount of water (d) brightness of rainbow
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
24. 24.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
28. 28.⚖️ 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) False (b) True
29. 29.🧺 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 magnet (d) a sheet of white paper
30. 30.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
31. 31.⚖️ 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
32. 32.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
36. 36.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a magnet is needed for the water rainbow. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a mirror (d) a sheet of white paper

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