Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 206 · 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.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
2. 2.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
7. 7.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
8. 8.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
9. 9.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
12. 12.True or false: yeast is not needed for the water rainbow. (a) True (b) False
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🌈 In VIBGYOR, what number colour is red?
17. 17.⚖️ 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
18. 18.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
19. 19.🌈 In VIBGYOR, what number colour is blue?
20. 20.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
21. 21.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
22. 22.⚖️ 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
23. 23.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a balloon (d) a magnet
25. 25.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a magnet (d) a sheet of white paper
26. 26.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a magnet (d) a balloon
27. 27.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
28. 28.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same window
29. 29.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
30. 30.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) a sunny window
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a balloon
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
36. 36.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
37. 37.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
38. 38.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
39. 39.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet

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