Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 283 · 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.⚖️ 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) the amount of water (c) the time of day (d) the same glass
2. 2.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
3. 3.⚖️ 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
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
5. 5.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
9. 9.🛟 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
10. 10.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.🧺 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) a battery cell (d) bright sunlight
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a sunny window
15. 15.⚖️ 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 time of day (d) brightness of rainbow
16. 16.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
18. 18.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) yeast (d) a battery cell
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
20. 20.🧺 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) yeast
21. 21.⚖️ 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
22. 22.🧺 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 magnet
23. 23.⚖️ 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
24. 24.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a sheet of white paper (d) turmeric powder
27. 27.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
28. 28.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
29. 29.⚖️ 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) False (b) True
30. 30.⚖️ 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 glass
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) turmeric powder
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a mirror (d) a clear glass of water
33. 33.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
34. 34.True or false: yeast is needed for the water rainbow. (a) False (b) True
35. 35.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
36. 36.🌈 In VIBGYOR, what number colour is violet?
37. 37.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a magnet (d) a clear glass of water
39. 39.⚖️ 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
40. 40.🌈 In VIBGYOR, what number colour is red?

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