Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 297 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a sunny window (d) bright sunlight
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
3. 3.🌈 In VIBGYOR, what number colour is green?
4. 4.⚖️ 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 same white paper (c) the amount of water (d) brightness of rainbow
5. 5.🌈 In VIBGYOR, what number colour is blue?
6. 6.🧺 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) a balloon
7. 7.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a magnet (d) a mirror
8. 8.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a sunny window
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a magnet
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 glass”? (a) we measure it (b) we change it (c) we keep it the same
13. 13.🌈 In VIBGYOR, what number colour is orange?
14. 14.🔮 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
15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
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 white paper”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
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) True (b) False
21. 21.True or false: a mirror is needed for the water rainbow. (a) True (b) False
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
24. 24.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) clouds (d) magnets
26. 26.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
27. 27.🌈 In VIBGYOR, what number colour is violet?
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a balloon (d) a battery cell
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) yeast
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
34. 34.⚖️ 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
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
37. 37.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed

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