Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 124 · 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 sheet of white paper (b) a clear glass of water (c) bright sunlight (d) turmeric powder
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
4. 4.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a battery cell (d) a sheet of white paper
5. 5.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a magnet (d) a battery cell
6. 6.⚖️ 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 time of day (b) the same white paper (c) brightness of rainbow (d) the amount of water
7. 7.🌈 In VIBGYOR, what number colour is orange?
8. 8.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) turmeric powder
10. 10.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
11. 11.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a mirror (d) a sunny window
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
14. 14.⚖️ 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 amount of water (b) the time of day (c) brightness of rainbow (d) the same white paper
15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a sunny window (d) a clear glass of water
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
18. 18.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
19. 19.⚖️ 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
20. 20.🌈 In VIBGYOR, what number colour is violet?
21. 21.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) yeast (d) a sheet of white paper
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) a sunny window
26. 26.🛟 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
27. 27.🌈 In VIBGYOR, what number colour is indigo?
28. 28.⚖️ 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) False (b) True
29. 29.True or false: yeast is needed for the water rainbow. (a) True (b) False
30. 30.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) in front of you (d) straight above you
31. 31.True or false: a mirror is needed for the water rainbow. (a) False (b) True
32. 32.⚖️ 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
33. 33.⚖️ 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) the same window (c) brightness of rainbow
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
37. 37.⚖️ 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
38. 38.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
39. 39.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
40. 40.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction

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