Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 885 · 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 white paper
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a battery cell
3. 3.⚖️ 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) True (b) False
4. 4.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a clear glass of water (d) a sunny window
11. 11.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a mirror (d) a balloon
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.🌈 In VIBGYOR, what number colour is red?
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 glass (c) brightness of rainbow (d) the same window
15. 15.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a sunny window (d) bright sunlight
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 white paper”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
18. 18.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
19. 19.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
20. 20.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) turmeric powder
23. 23.🌈 In VIBGYOR, what number colour is indigo?
24. 24.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
25. 25.⚖️ 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 time of day (c) the amount of water (d) brightness of rainbow
26. 26.True or false: a balloon is needed for the water rainbow. (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 kept the same? (a) the amount of water (b) the same window (c) brightness of rainbow
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a balloon
30. 30.⚖️ 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
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a magnet (d) a sheet of white paper
32. 32.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a mirror (d) a sheet of white paper
33. 33.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
34. 34.True or false: yeast is needed for the water rainbow. (a) False (b) True
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) in front of you (d) behind you
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sunny window

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