Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 69 · 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.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
3. 3.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
4. 4.🔮 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
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
7. 7.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
10. 10.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a balloon
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
13. 13.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a sunny window (d) a balloon
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
15. 15.⚖️ 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 change it (b) we measure it (c) we keep it the same
16. 16.True or false: yeast is not needed for the water rainbow. (a) False (b) True
17. 17.🌈 In VIBGYOR, what number colour is orange?
18. 18.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
19. 19.⚖️ 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) the time of day (d) the same glass
20. 20.⚖️ 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) False (b) True
21. 21.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
22. 22.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
23. 23.🧺 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) turmeric powder
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a balloon (d) yeast
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
27. 27.⚖️ 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
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) yeast (d) a clear glass of water
31. 31.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
32. 32.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
34. 34.🌈 In VIBGYOR, what number colour is blue?
35. 35.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
36. 36.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
37. 37.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a sheet of white paper (d) yeast
38. 38.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
39. 39.⚖️ 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 time of day (b) brightness of rainbow (c) the same white paper (d) the same glass
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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