Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 320 · 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 yeast for the water rainbow? (a) not needed (b) needed
2. 2.🛟 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 turns blue (d) so it gets hot
3. 3.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
4. 4.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) yeast
6. 6.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
7. 7.🌈 In VIBGYOR, what number colour is violet?
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
9. 9.🧺 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 sunny window (d) a clear glass of water
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
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 time of day (b) brightness of rainbow (c) the same glass (d) the amount of water
12. 12.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
13. 13.🌈 In VIBGYOR, what number colour is blue?
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🛟 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
16. 16.⚖️ 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
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
19. 19.True or false: bright sunlight is not 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? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.⚖️ 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) the same window (d) the same white paper
22. 22.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
23. 23.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) turmeric powder (d) a mirror
24. 24.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
25. 25.🌈 In VIBGYOR, what number colour is green?
26. 26.⚖️ 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
27. 27.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
28. 28.⚖️ 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
29. 29.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
30. 30.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) a clear glass of water (d) a sunny window
32. 32.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) behind you (d) under the ground
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
34. 34.🌈 In VIBGYOR, what number colour is orange?
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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
37. 37.🌈 In VIBGYOR, what number colour is red?
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
40. 40.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a sheet of white paper (d) a battery cell

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