Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 423 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.⚖️ 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
4. 4.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
6. 6.True or false: a mirror is needed for the water rainbow. (a) False (b) True
7. 7.🌦️ 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
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
9. 9.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a magnet
11. 11.True or false: a magnet is needed for the water rainbow. (a) True (b) False
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
13. 13.⚖️ 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
14. 14.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
15. 15.🧺 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) yeast (d) bright sunlight
16. 16.⚖️ 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
17. 17.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
18. 18.⚖️ 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
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
20. 20.⚖️ 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) False (b) True
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
22. 22.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a magnet (d) a sunny window
23. 23.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
24. 24.⚖️ 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
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
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 kept the same. (a) False (b) True
28. 28.⚖️ 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) brightness of rainbow (c) the same white paper (d) the time of day
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
30. 30.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
31. 31.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.⚖️ 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
34. 34.🧺 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 sheet of white paper (d) turmeric powder
35. 35.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a balloon (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 “brightness of rainbow”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a sunny window
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
39. 39.🌈 In VIBGYOR, what number colour is orange?
40. 40.⚖️ 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 time of day (b) the amount of water (c) the same glass (d) brightness of rainbow

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