Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 281 · 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.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
2. 2.⚖️ 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) brightness of rainbow (d) the same glass
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
4. 4.🧺 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) a balloon (d) bright sunlight
5. 5.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
7. 7.⚖️ 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 measure it (b) we change it (c) we keep it the same
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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) a sunny window
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
13. 13.True or false: a magnet is needed for the water rainbow. (a) False (b) True
14. 14.⚖️ 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) False (b) True
15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
16. 16.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a battery cell (d) yeast
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
18. 18.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a sheet of white paper
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the water is coloured (d) the glass is painted
23. 23.🌈 In VIBGYOR, what number colour is orange?
24. 24.⚖️ 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 time of day (d) the amount of water
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🧺 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) a mirror (d) a clear glass of water
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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) False (b) True
34. 34.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
35. 35.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
36. 36.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
37. 37.⚖️ 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
38. 38.True or false: yeast is not needed for the water rainbow. (a) False (b) True
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
40. 40.🌈 In VIBGYOR, what number colour is yellow?

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