Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 256 · 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.🧺 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) yeast (d) a sunny window
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: yeast is needed for the water rainbow. (a) False (b) True
4. 4.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a sunny window
5. 5.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
6. 6.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a magnet (d) a clear glass of water
7. 7.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) straight above you (d) behind you
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
10. 10.🧺 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 magnet (d) a clear glass of water
11. 11.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
13. 13.🧺 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 battery cell (d) bright sunlight
14. 14.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
15. 15.⚖️ 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 time of day (c) the amount of water (d) the same window
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
17. 17.🔮 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
18. 18.⚖️ 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
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water
20. 20.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) tiny drops of water (d) only yellow light
21. 21.🌈 In VIBGYOR, what number colour is yellow?
22. 22.🌈 In VIBGYOR, what number colour is green?
23. 23.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a sheet of white paper (d) a magnet
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a balloon
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
28. 28.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.🌈 In VIBGYOR, what number colour is red?
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
32. 32.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
33. 33.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
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 measure it (c) we change it
35. 35.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
36. 36.⚖️ 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 window (b) the amount of water (c) the time of day (d) brightness of rainbow
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.⚖️ 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) False (b) True
39. 39.🌈 In VIBGYOR, what number colour is indigo?
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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