Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 710 · 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) the rainbow fades (c) it turns all red (d) it floats away
2. 2.⚖️ 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 same window (c) the amount of water
3. 3.⚖️ 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
4. 4.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
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 measure it (c) we keep it the same
6. 6.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
7. 7.⚖️ 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
8. 8.🌈 In VIBGYOR, what number colour is green?
9. 9.🧺 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) bright sunlight (d) a magnet
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
11. 11.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow (d) the time of day
12. 12.🌈 In VIBGYOR, what number colour is indigo?
13. 13.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) refraction (d) magnetism
14. 14.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) turmeric powder (d) bright sunlight
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ 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 same glass (c) the amount of water
18. 18.True or false: yeast is not needed for the water rainbow. (a) True (b) False
19. 19.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) bright sunlight (d) a clear glass of water
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
24. 24.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
25. 25.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
26. 26.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a sheet of white paper (d) a mirror
27. 27.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) turmeric powder (d) a clear glass of water
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) a sheet of white paper
29. 29.⚖️ 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 glass
30. 30.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) water splits the light (d) the paper makes colours
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.⚖️ 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 time of day
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
34. 34.🔮 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
35. 35.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) a sheet of white paper
37. 37.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sunny window
40. 40.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False

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