Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 260 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sunny window
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
4. 4.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) straight above you (d) in front of you
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
6. 6.🌈 In VIBGYOR, what number colour is yellow?
7. 7.🌈 In VIBGYOR, what number colour is orange?
8. 8.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
9. 9.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) turmeric powder (d) a sunny window
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) a sunny window (d) bright sunlight
11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
12. 12.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a magnet (d) yeast
13. 13.☀️ 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
14. 14.⚖️ 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 measure it (b) we keep it the same (c) we change it
15. 15.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
17. 17.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
18. 18.🌈 In VIBGYOR, what number colour is indigo?
19. 19.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
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) brightness of rainbow (b) the time of day (c) the amount of water
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a clear glass of water
26. 26.⚖️ 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
27. 27.🔮 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
28. 28.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
29. 29.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
31. 31.⚖️ 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) the same window (c) brightness of rainbow
32. 32.🧺 Do we need yeast 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? True or false: the same white paper is kept the same. (a) False (b) True
34. 34.⚖️ 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) True (b) False
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sheet of white paper (d) a mirror
36. 36.⚖️ 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
37. 37.⚖️ 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) False (b) True
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 what we measure. (a) True (b) False
39. 39.⚖️ 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) brightness of rainbow (c) the same window (d) the time of day
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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