Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 10 · 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.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
2. 2.🌈 In VIBGYOR, what number colour is orange?
3. 3.🌈 In VIBGYOR, what number colour is green?
4. 4.🌈 In VIBGYOR, what number colour is yellow?
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 window”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.⚖️ 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 white paper (c) the amount of water (d) the same glass
7. 7.🛟 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
8. 8.⚖️ 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
9. 9.🧺 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 sheet of white paper (d) turmeric powder
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) True (b) False
11. 11.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
12. 12.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
13. 13.⚖️ 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 time of day
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) a sheet of white paper
15. 15.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
16. 16.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a battery cell (d) a mirror
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) bright sunlight
20. 20.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a sunny window (d) turmeric powder
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.⚖️ 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
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
25. 25.⚖️ 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 window
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) turmeric powder
27. 27.⚖️ 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
28. 28.True or false: a balloon is needed for the water rainbow. (a) True (b) False
29. 29.⚖️ 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
30. 30.🛟 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
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a clear glass of water
32. 32.⚖️ 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 amount of water (c) brightness of rainbow (d) the same white paper
33. 33.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
34. 34.🌈 In VIBGYOR, what number colour is indigo?
35. 35.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a sheet of white paper (d) a battery cell
37. 37.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
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) True (b) False
39. 39.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red

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