Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 136 · 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.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
2. 2.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
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) a balloon
4. 4.🌈 In VIBGYOR, what number colour is indigo?
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
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) brightness of rainbow (b) the amount of water (c) the same window (d) the same glass
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) a clear glass of water (d) bright sunlight
8. 8.🌦️ 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
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
10. 10.🌈 In VIBGYOR, what number colour is blue?
11. 11.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
12. 12.⚖️ 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
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
14. 14.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a magnet (d) a sheet of white paper
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.⚖️ 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 amount of water (c) the same glass
17. 17.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🌈 In VIBGYOR, what number colour is violet?
20. 20.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
22. 22.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
23. 23.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
25. 25.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
28. 28.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
30. 30.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.True or false: a balloon is needed for the water rainbow. (a) True (b) False
33. 33.⚖️ 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
34. 34.⚖️ 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 white paper (b) the amount of water (c) brightness of rainbow
35. 35.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a battery cell (d) a clear glass of water
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sheet of white paper
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) a sheet of white paper
38. 38.⚖️ 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
39. 39.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green

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