Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 630 · 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 a sunny window 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 sheet of white paper (c) a balloon (d) bright sunlight
3. 3.⚖️ 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
4. 4.⚖️ 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 white paper
5. 5.⚖️ 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
6. 6.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) yeast (d) a clear glass of water
8. 8.⚖️ 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
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
11. 11.⚖️ 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
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 white paper”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🌈 In VIBGYOR, what number colour is red?
14. 14.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
15. 15.🛟 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
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) a sunny window
17. 17.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a sunny window (d) yeast
18. 18.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
19. 19.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
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 kept the same. (a) False (b) True
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a mirror
23. 23.🌈 In VIBGYOR, what number colour is blue?
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a battery cell (d) a mirror
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.🌈 In VIBGYOR, what number colour is orange?
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) brightness of rainbow (b) the same white paper (c) the same glass (d) the time of day
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) the amount of water (b) the same glass (c) brightness of rainbow
30. 30.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
31. 31.⚖️ 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
32. 32.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) bright sunlight
35. 35.🌈 In VIBGYOR, what number colour is green?
36. 36.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a clear glass of water (d) a battery cell
38. 38.🧺 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) bright sunlight
39. 39.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
40. 40.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets

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