Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 287 · 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.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
2. 2.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
3. 3.True or false: a magnet is needed for the water rainbow. (a) True (b) False
4. 4.🌈 In VIBGYOR, what number colour is yellow?
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
8. 8.⚖️ 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 same glass (c) the amount of water
9. 9.⚖️ 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) brightness of rainbow (b) the amount of water (c) the time of day (d) the same window
10. 10.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
11. 11.⚖️ 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 keep it the same (b) we change it (c) we measure it
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🌦️ 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
16. 16.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
21. 21.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) bright sunlight (d) a mirror
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) bright sunlight (d) a battery cell
23. 23.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a sheet of white paper (d) turmeric powder
24. 24.🔮 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
25. 25.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
26. 26.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
28. 28.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a magnet
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
32. 32.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) turmeric powder (d) a mirror
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a balloon (d) a sheet of white paper
34. 34.⚖️ 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 window (b) the time of day (c) the amount of water (d) brightness of rainbow
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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 change it (c) we measure it
38. 38.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
39. 39.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True

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