Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 449 · 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.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) a sunny window
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
5. 5.☀️ 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
6. 6.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) yeast (d) a clear glass of water
8. 8.⚖️ 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 glass (c) the amount of water (d) the same white paper
9. 9.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow
10. 10.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
11. 11.🌈 In VIBGYOR, what number colour is indigo?
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a balloon
13. 13.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
14. 14.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
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 what we measure. (a) True (b) False
18. 18.🧺 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 sunny window
19. 19.True or false: a balloon is needed for the water rainbow. (a) False (b) True
20. 20.⚖️ 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 window (c) the amount of water (d) brightness of rainbow
21. 21.🌈 In VIBGYOR, what number colour is orange?
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a sheet of white paper (d) turmeric powder
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a mirror
26. 26.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) yeast (d) a battery cell
27. 27.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.🛟 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
30. 30.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
31. 31.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
32. 32.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a magnet (d) a sheet of white paper
34. 34.⚖️ 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) False (b) True
35. 35.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
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 the one thing we change. (a) True (b) False
39. 39.⚖️ 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
40. 40.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow

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