Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 285 · 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.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
2. 2.⚖️ 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
3. 3.⚖️ 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) True (b) False
4. 4.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
7. 7.🧺 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 magnet (d) a sheet of white paper
8. 8.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
11. 11.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
12. 12.⚖️ 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) True (b) False
13. 13.🌈 In VIBGYOR, what number colour is yellow?
14. 14.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
15. 15.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
16. 16.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
17. 17.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a magnet (d) bright sunlight
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) yeast (d) a sheet of white paper
19. 19.True or false: a balloon is needed for the water rainbow. (a) False (b) True
20. 20.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a battery cell (d) turmeric powder
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
22. 22.⚖️ 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
23. 23.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
26. 26.⚖️ 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 same white paper (c) the same window (d) the time of day
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
28. 28.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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 same glass (c) the amount of water
30. 30.⚖️ 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 white paper (b) brightness of rainbow (c) the amount of water
31. 31.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a battery cell (d) a mirror
32. 32.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a magnet
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
35. 35.⚖️ 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 window (b) the amount of water (c) the time of day (d) the same white paper
36. 36.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
38. 38.🧺 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 sunny window (d) a battery cell
39. 39.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
40. 40.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed

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