Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 991 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
2. 2.⚖️ 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 measure it (c) we change it
3. 3.True or false: yeast is needed for the water rainbow. (a) True (b) False
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
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 white paper”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a balloon (d) yeast
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
9. 9.⚖️ 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) brightness of rainbow (c) the same window (d) the time of day
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
11. 11.🌈 In VIBGYOR, what number colour is blue?
12. 12.🧺 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 battery cell
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
15. 15.⚖️ 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 same glass (d) brightness of rainbow
16. 16.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a balloon
18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
19. 19.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
22. 22.⚖️ 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) True (b) False
23. 23.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
24. 24.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
25. 25.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) yeast (d) a clear glass of water
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) a sunny window (d) bright sunlight
30. 30.True or false: a balloon is needed for the water rainbow. (a) False (b) True
31. 31.⚖️ 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
32. 32.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) bright sunlight
35. 35.True or false: a magnet is needed for the water rainbow. (a) True (b) False
36. 36.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) True (b) False
38. 38.🌈 In VIBGYOR, what number colour is orange?
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 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 clear glass of water (d) yeast

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