Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 201 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sunny window (d) a sheet of white paper
5. 5.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sunny window (d) a clear glass of water
9. 9.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
12. 12.⚖️ 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 time of day
13. 13.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
14. 14.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a sunny window
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
20. 20.True or false: a magnet is needed for the water rainbow. (a) True (b) False
21. 21.⚖️ 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 white paper (b) the time of day (c) the same glass (d) brightness of rainbow
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🌈 In VIBGYOR, what number colour is red?
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a sunny window (d) a sheet of white paper
27. 27.⚖️ 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
28. 28.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
29. 29.True or false: a mirror is needed for the water rainbow. (a) True (b) False
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
31. 31.⚖️ 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 amount of water (b) the time of day (c) the same white paper (d) the same glass
32. 32.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a balloon (d) yeast
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
34. 34.⚖️ 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
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
37. 37.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
39. 39.True or false: yeast is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper

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