Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 559 · 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 kept the same? (a) brightness of rainbow (b) the amount of water (c) the same glass
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
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 measure it (b) we keep it the same (c) we change it
5. 5.🌈 In VIBGYOR, what number colour is blue?
6. 6.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
7. 7.🌈 In VIBGYOR, what number colour is red?
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
9. 9.⚖️ 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
10. 10.🌈 In VIBGYOR, what number colour is violet?
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
12. 12.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
13. 13.True or false: yeast is needed for the water rainbow. (a) True (b) False
14. 14.⚖️ 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 same window (c) brightness of rainbow (d) the same glass
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
16. 16.⚖️ 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
17. 17.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) magnetism (d) reflection
18. 18.⚖️ 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 change it (b) we keep it the same (c) we measure it
19. 19.⚖️ 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 keep it the same (b) we change it (c) we measure it
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) bright sunlight
22. 22.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a balloon (d) a sunny window
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
25. 25.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
27. 27.⚖️ 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) brightness of rainbow (d) the time of day
28. 28.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
29. 29.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a magnet (d) a balloon
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.⚖️ 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
32. 32.🌈 In VIBGYOR, what number colour is orange?
33. 33.🧺 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) a battery cell (d) bright sunlight
34. 34.🧺 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) bright sunlight (d) a mirror
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) yeast (d) a sheet of white paper
36. 36.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a mirror (d) yeast
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
40. 40.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed

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