Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 491 · 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.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
5. 5.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
6. 6.⚖️ 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 glass (b) the amount of water (c) the same window (d) brightness of rainbow
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) a clear glass of water (d) a mirror
8. 8.🌈 In VIBGYOR, what number colour is blue?
9. 9.🌈 In VIBGYOR, what number colour is violet?
10. 10.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) yeast (d) a magnet
11. 11.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) yeast
15. 15.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
16. 16.⚖️ 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) True (b) False
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.🧺 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 battery cell
19. 19.🛟 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
20. 20.⚖️ 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
21. 21.True or false: a magnet is needed for the water rainbow. (a) False (b) True
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
23. 23.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
24. 24.⚖️ 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 white paper (b) the amount of water (c) the time of day (d) the same glass
25. 25.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a clear glass of water (d) a battery cell
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) yeast (d) turmeric powder
30. 30.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
32. 32.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) green (d) blue
35. 35.🧺 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
36. 36.🌈 In VIBGYOR, what number colour is red?
37. 37.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a sheet of white paper (d) a clear glass of water
38. 38.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
40. 40.🧺 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) turmeric powder

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