Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 548 · 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.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
2. 2.⚖️ 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 window (c) brightness of rainbow (d) the amount of water
3. 3.⚖️ 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
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
6. 6.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
7. 7.🌈 In VIBGYOR, what number colour is indigo?
8. 8.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
9. 9.⚖️ 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
10. 10.🌈 In VIBGYOR, what number colour is orange?
11. 11.⚖️ 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 same window (c) the amount of water (d) the time of day
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a balloon
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
15. 15.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) bright sunlight
18. 18.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) a sunny window
21. 21.⚖️ 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 change it (b) we keep it the same (c) we measure it
22. 22.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
23. 23.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
24. 24.True or false: a mirror is needed for the water rainbow. (a) False (b) True
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
27. 27.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a battery cell (d) a balloon
28. 28.⚖️ 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
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
30. 30.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
31. 31.⚖️ 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
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a clear glass of water (d) a battery cell
34. 34.🌈 In VIBGYOR, what number colour is green?
35. 35.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
36. 36.🧺 Do we need a magnet 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? True or false: the same white paper is kept the same. (a) True (b) False
38. 38.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
39. 39.🛟 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
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed

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