Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 403 · 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.🌈 In VIBGYOR, what number colour is green?
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the time of day (c) the same window (d) the same glass
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a mirror
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
6. 6.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) turmeric powder (d) bright sunlight
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
9. 9.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
11. 11.⚖️ 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) the same glass (c) brightness of rainbow
12. 12.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
13. 13.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
14. 14.🧺 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) bright sunlight (d) a clear glass of water
15. 15.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
16. 16.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
18. 18.⚖️ 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 same glass (c) the same window (d) the amount of water
19. 19.⚖️ 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
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) turmeric powder (d) bright sunlight
23. 23.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a mirror (d) a sunny window
25. 25.🌈 In VIBGYOR, what number colour is orange?
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) bright sunlight (d) a sheet of white paper
27. 27.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
29. 29.⚖️ 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) True (b) False
30. 30.True or false: a magnet is needed for the water rainbow. (a) False (b) True
31. 31.🛟 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
32. 32.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
33. 33.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) red (d) yellow
34. 34.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) in front of you (c) straight above you (d) under the ground
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.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
38. 38.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a sunny window
39. 39.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed

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