Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 760 · 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? True or false: the same window is kept the same. (a) True (b) False
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
3. 3.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a battery cell (d) a balloon
4. 4.⚖️ 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
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 change it (c) we measure it
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.⚖️ 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 window
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🔮 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
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) the same window (b) the amount of water (c) the same glass (d) the same white paper
12. 12.True or false: yeast is needed for the water rainbow. (a) True (b) False
13. 13.🛟 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
14. 14.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
15. 15.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
16. 16.⚖️ 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 amount of water (c) the same window
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) turmeric powder (d) a sunny window
18. 18.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
19. 19.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) bright sunlight (d) a magnet
21. 21.🧺 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) a clear glass of water (d) yeast
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
23. 23.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
24. 24.🧺 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) a balloon (d) bright sunlight
25. 25.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) turmeric powder (d) a battery cell
26. 26.⚖️ 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
27. 27.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sunny window
29. 29.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
30. 30.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a sunny window
34. 34.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
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 amount of water (b) the time of day (c) brightness of rainbow
36. 36.⚖️ 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
37. 37.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
38. 38.🌈 In VIBGYOR, what number colour is orange?
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed

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