Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 131 · 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? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ 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
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.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
7. 7.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
8. 8.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
9. 9.⚖️ 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
10. 10.True or false: yeast is not needed for the water rainbow. (a) True (b) False
11. 11.True or false: yeast is needed for the water rainbow. (a) True (b) False
12. 12.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a balloon (d) turmeric powder
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
14. 14.⚖️ 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 white paper
15. 15.⚖️ 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 white paper (b) the amount of water (c) the time of day (d) brightness of rainbow
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) yeast (c) a balloon (d) a battery cell
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a balloon
19. 19.⚖️ 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 glass (c) brightness of rainbow (d) the time of day
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) yeast
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
22. 22.True or false: a balloon is needed for the water rainbow. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
26. 26.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
27. 27.⚖️ 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) False (b) True
28. 28.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
29. 29.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) yeast (d) bright sunlight
31. 31.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sunny window (c) a mirror (d) yeast
32. 32.🌈 In VIBGYOR, what number colour is blue?
33. 33.True or false: a mirror is needed for the water rainbow. (a) True (b) False
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🌈 In VIBGYOR, what number colour is indigo?
36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a sunny window
40. 40.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True

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