Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 76 · 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.🌈 In VIBGYOR, what number colour is indigo?
2. 2.True or false: yeast is needed for the water rainbow. (a) True (b) False
3. 3.⚖️ 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 amount of water (b) the same glass (c) the same white paper (d) brightness of rainbow
4. 4.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
6. 6.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a balloon (d) yeast
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ 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 same white paper
9. 9.⚖️ 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
10. 10.⚖️ 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 change it (c) we keep it the same
11. 11.⚖️ 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) False (b) True
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
13. 13.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) bright sunlight
15. 15.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ 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) False (b) True
18. 18.⚖️ 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 measure it (c) we change it
19. 19.🌈 In VIBGYOR, what number colour is green?
20. 20.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
21. 21.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
23. 23.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a magnet (d) a sunny window
24. 24.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
25. 25.🌈 In VIBGYOR, what number colour is yellow?
26. 26.⚖️ 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 white paper (c) brightness of rainbow
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) bright sunlight
28. 28.⚖️ 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
29. 29.🔮 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
30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
31. 31.True or false: a mirror is needed for the water rainbow. (a) True (b) False
32. 32.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a clear glass of water (d) a sunny window
34. 34.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
35. 35.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
36. 36.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
38. 38.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
39. 39.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
40. 40.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds

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