Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 126 · 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) the amount of water (b) the same glass (c) brightness of rainbow
2. 2.🌈 In VIBGYOR, what number colour is red?
3. 3.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a mirror (d) bright sunlight
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
6. 6.⚖️ 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
7. 7.🧺 Do we need a clear glass of water 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? True or false: the same window is kept the same. (a) True (b) False
9. 9.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
10. 10.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) 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 time of day”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
13. 13.🌈 In VIBGYOR, what number colour is orange?
14. 14.🛟 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
15. 15.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a balloon
16. 16.🌈 In VIBGYOR, what number colour is indigo?
17. 17.🧺 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 mirror
18. 18.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a mirror (d) yeast
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
20. 20.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
22. 22.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a balloon (d) a sheet of white paper
23. 23.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
24. 24.🧺 Do we need yeast 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) brightness of rainbow (b) the amount of water (c) the same window (d) the same glass
26. 26.True or false: a balloon is needed for the water rainbow. (a) False (b) True
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a battery cell (d) bright sunlight
28. 28.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
31. 31.🌈 How many colours do we name in a rainbow (VIBGYOR)?
32. 32.True or false: yeast is not needed for the water rainbow. (a) False (b) True
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
35. 35.🧺 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) turmeric powder (d) bright sunlight
36. 36.⚖️ 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
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
38. 38.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) refraction (d) evaporation
39. 39.⚖️ 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
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) bright sunlight (d) a sheet of white paper

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