Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 755 · 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.🌈 In VIBGYOR, what number colour is red?
2. 2.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
3. 3.⚖️ 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
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
5. 5.⚖️ 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
6. 6.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
7. 7.⚖️ 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
8. 8.⚖️ 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) True (b) False
9. 9.🌦️ 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
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
12. 12.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) yeast (d) a mirror
13. 13.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a battery cell (d) a sunny window
14. 14.🧺 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 magnet
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
16. 16.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
18. 18.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
21. 21.⚖️ 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
22. 22.⚖️ 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 white paper
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a sunny window (d) bright sunlight
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
26. 26.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a sheet of white paper
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a balloon
28. 28.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
29. 29.🌈 In VIBGYOR, what number colour is green?
30. 30.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) magnetism (d) reflection
31. 31.⚖️ 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 same window (c) the amount of water (d) the time of day
32. 32.🧺 Do we need a mirror 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? True or false: the amount of water is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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 measure it (c) we change it
36. 36.🌈 In VIBGYOR, what number colour is violet?
37. 37.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a clear glass of water
38. 38.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) a sunny window
40. 40.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed

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