Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 574 · 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? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a sunny window (d) a mirror
5. 5.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
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 floats away (d) it turns brighter
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper
10. 10.🛟 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
11. 11.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
12. 12.🌈 In VIBGYOR, what number colour is blue?
13. 13.🧺 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
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
15. 15.⚖️ 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
16. 16.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
18. 18.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
19. 19.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
22. 22.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
23. 23.True or false: yeast is needed for the water rainbow. (a) False (b) True
24. 24.⚖️ 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) True (b) False
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
29. 29.⚖️ 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
30. 30.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) a clear glass of water (d) a sunny window
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
36. 36.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
39. 39.⚖️ 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
40. 40.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True

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