Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 346 · 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.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) in front of you (d) under the ground
2. 2.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a balloon (d) bright sunlight
3. 3.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
4. 4.⚖️ 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 same glass (d) the amount of water
5. 5.⚖️ 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 change it (c) we measure it
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
8. 8.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a mirror
10. 10.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
13. 13.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
15. 15.True or false: a magnet is needed for the water rainbow. (a) False (b) True
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
17. 17.⚖️ 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) False (b) True
18. 18.⚖️ 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 glass (b) the time of day (c) brightness of rainbow (d) the amount of water
19. 19.⚖️ 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
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a magnet
22. 22.🌈 In VIBGYOR, what number colour is orange?
23. 23.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
24. 24.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
25. 25.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
26. 26.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
28. 28.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) bright sunlight (d) a clear glass of water
30. 30.True or false: a sheet of white paper is not 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 white paper”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a clear glass of water (d) a battery cell
33. 33.True or false: a mirror is needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.🧺 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 sunny window (d) yeast
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False

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