Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 215 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a sheet of white paper (d) a clear glass of water
5. 5.🔮 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
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
7. 7.🧺 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 mirror (d) a sunny window
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a mirror (d) a sheet of white paper
13. 13.🌈 In VIBGYOR, what number colour is red?
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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
16. 16.True or false: a mirror is needed for the water rainbow. (a) False (b) True
17. 17.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
18. 18.🛟 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
19. 19.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
20. 20.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a balloon (d) turmeric powder
22. 22.⚖️ 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 white paper (c) the amount of water
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
24. 24.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) yeast (d) a sheet of white paper
25. 25.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
26. 26.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same glass
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
29. 29.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) straight above you (d) in front of you
30. 30.🛟 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
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
33. 33.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a battery cell (d) bright sunlight
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 white paper”? (a) we measure it (b) we keep it the same (c) we change it
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.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
39. 39.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
40. 40.🌈 In VIBGYOR, what number colour is blue?

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