Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 515 · 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 turmeric powder for the water rainbow? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a sheet of white paper (d) a sunny window
3. 3.🛟 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
4. 4.⚖️ 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 same white paper (c) the same window (d) the same glass
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
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.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
10. 10.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
11. 11.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
12. 12.🌈 In VIBGYOR, what number colour is violet?
13. 13.⚖️ 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
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.⚖️ 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) True (b) False
16. 16.🌈 In VIBGYOR, what number colour is blue?
17. 17.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the same glass
18. 18.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
19. 19.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) violet (d) orange
22. 22.⚖️ 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
23. 23.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a magnet
25. 25.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
28. 28.🌈 In VIBGYOR, what number colour is red?
29. 29.⚖️ 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
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
31. 31.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
32. 32.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) a clear glass of water (d) yeast
33. 33.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) bright sunlight (d) a sheet of white paper
36. 36.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) turmeric powder (d) a battery cell
37. 37.⚖️ 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
38. 38.⚖️ 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 same window
39. 39.True or false: yeast is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a mirror (d) a clear glass of water

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