Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 625 · 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.🌈 In VIBGYOR, what number colour is indigo?
2. 2.🧺 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 clear glass of water (d) a mirror
3. 3.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
4. 4.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
6. 6.⚖️ 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 glass (b) the same white paper (c) the amount of water (d) the time of day
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a magnet (d) a clear glass of water
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a battery cell (d) a sheet of white paper
10. 10.🌈 In VIBGYOR, what number colour is orange?
11. 11.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
12. 12.⚖️ 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
13. 13.True or false: a mirror is needed for the water rainbow. (a) False (b) True
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 magnet (c) a sheet of white paper (d) bright sunlight
16. 16.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
19. 19.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) yellow (d) red
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
21. 21.⚖️ 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) brightness of rainbow (c) the same window
22. 22.🌈 In VIBGYOR, what number colour is violet?
23. 23.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
24. 24.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) a sunny window (d) a sheet of white paper
27. 27.🧺 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 balloon (d) bright sunlight
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) bright sunlight
30. 30.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
31. 31.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
32. 32.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) bright sunlight (d) a clear glass of water
33. 33.🌈 In VIBGYOR, what number colour is green?
34. 34.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
36. 36.⚖️ 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 time of day (b) the same white paper (c) the amount of water (d) brightness of rainbow
37. 37.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) yeast (d) a magnet
38. 38.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) bright sunlight (d) a balloon
39. 39.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
40. 40.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed

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