Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 610 · 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? True or false: the amount of water is the one thing we change. (a) True (b) False
2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
3. 3.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
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) stare at the Sun (d) never look at the Sun
6. 6.🌈 In VIBGYOR, what number colour is green?
7. 7.🛟 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 it gets hot (d) so the Sun moves
8. 8.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a mirror (d) a magnet
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
10. 10.⚖️ 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 amount of water (b) the same glass (c) the time of day (d) brightness of rainbow
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a sunny window
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
14. 14.⚖️ 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) True (b) False
15. 15.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
16. 16.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
17. 17.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured
18. 18.⚖️ 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) brightness of rainbow (b) the same window (c) the same glass (d) the amount of water
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
20. 20.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) bright sunlight (d) a battery cell
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
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 amount of water (b) brightness of rainbow (c) the same white paper
25. 25.🧺 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 balloon
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
28. 28.🧺 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) a magnet
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
30. 30.⚖️ 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
31. 31.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
32. 32.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) bright sunlight
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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
38. 38.True or false: yeast is not needed for the water rainbow. (a) False (b) True
39. 39.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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