Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 267 · 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 amount of water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a balloon (d) yeast
3. 3.⚖️ 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) brightness of rainbow (c) the time of day
4. 4.🧺 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
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
6. 6.🌈 In VIBGYOR, what number colour is red?
7. 7.⚖️ 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) False (b) True
8. 8.True or false: a mirror is needed for the water rainbow. (a) True (b) False
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
12. 12.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
13. 13.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) yeast
15. 15.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
16. 16.⚖️ 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 time of day (c) the same glass (d) the amount of water
17. 17.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
18. 18.🌈 In VIBGYOR, what number colour is violet?
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) a sunny window
20. 20.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
22. 22.🛟 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
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) turmeric powder (d) a sunny window
27. 27.🌈 In VIBGYOR, what number colour is blue?
28. 28.⚖️ 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 same window (c) the amount of water
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
30. 30.🌈 In VIBGYOR, what number colour is orange?
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
32. 32.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
35. 35.⚖️ 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 glass (b) the same window (c) brightness of rainbow (d) the amount of water
36. 36.⚖️ 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
37. 37.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
38. 38.🔮 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
39. 39.🧺 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) bright sunlight (d) a mirror
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet

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