Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 172 · 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 magnet is needed for the water rainbow. (a) True (b) False
2. 2.🌈 In VIBGYOR, what number colour is blue?
3. 3.⚖️ 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 same glass (c) the time of day (d) the amount of water
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
7. 7.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
8. 8.🛟 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
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
10. 10.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
11. 11.🌈 In VIBGYOR, what number colour is indigo?
12. 12.🧺 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) a balloon
13. 13.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🌈 In VIBGYOR, what number colour is violet?
17. 17.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
18. 18.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
19. 19.⚖️ 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
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
22. 22.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a clear glass of water (d) a battery cell
26. 26.🧺 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
27. 27.⚖️ 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
28. 28.True or false: yeast is needed for the water rainbow. (a) False (b) True
29. 29.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a sheet of white paper (d) bright sunlight
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
34. 34.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) yeast (d) a sunny window
35. 35.🌈 In VIBGYOR, what number colour is red?
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) in front of you (c) under the ground (d) straight above you
39. 39.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
40. 40.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass

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