Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 107 · 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.⚖️ 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) brightness of rainbow (c) the same window
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
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 keep it the same (b) we change it (c) we measure it
4. 4.🌈 In VIBGYOR, what number colour is blue?
5. 5.🧺 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) bright sunlight (d) yeast
6. 6.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
7. 7.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a magnet (d) a balloon
8. 8.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) straight above you (d) in front of you
9. 9.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
12. 12.⚖️ 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) False (b) True
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sheet of white paper
18. 18.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a battery cell (d) a sheet of white paper
20. 20.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.⚖️ 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 white paper (b) the same window (c) the amount of water (d) the time of day
24. 24.🌈 In VIBGYOR, what number colour is red?
25. 25.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) turmeric powder (d) a balloon
26. 26.🔮 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
27. 27.⚖️ 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
28. 28.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
29. 29.⚖️ 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 same white paper (b) the same window (c) brightness of rainbow (d) the time of day
30. 30.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a sunny window
32. 32.🧺 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 mirror (d) a sunny window
33. 33.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
34. 34.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a magnet (d) bright sunlight
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
37. 37.True or false: yeast is not needed for the water rainbow. (a) True (b) False
38. 38.🌈 In VIBGYOR, what number colour is violet?
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
40. 40.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed

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