Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 615 · 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 same glass is kept the same. (a) True (b) False
2. 2.⚖️ 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 time of day (c) the same window (d) the amount of water
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
4. 4.⚖️ 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
5. 5.True or false: a magnet is needed for the water rainbow. (a) True (b) False
6. 6.⚖️ 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
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue
9. 9.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a mirror (d) a battery cell
10. 10.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the amount of water (c) the same glass (d) the same white paper
13. 13.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a battery cell
15. 15.True or false: yeast is needed for the water rainbow. (a) False (b) True
16. 16.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
17. 17.🌈 In VIBGYOR, what number colour is blue?
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🧺 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 mirror (d) a sunny window
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
21. 21.⚖️ 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) True (b) False
22. 22.🧺 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 balloon (d) bright sunlight
23. 23.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) a clear glass of water
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In VIBGYOR, what number colour is indigo?
27. 27.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sunny window
28. 28.🌈 In VIBGYOR, what number colour is red?
29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) turmeric powder (d) a clear glass of water
30. 30.🧺 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) yeast (d) bright sunlight
31. 31.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) yeast (d) a sheet of white paper
35. 35.🛟 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
36. 36.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
37. 37.🧺 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 sunny window (d) a magnet
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a clear glass of water (c) turmeric powder (d) a battery cell
40. 40.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons

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